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Question 9461Question

If the price of good XX falls while the consumer's income and the price of good YY remain unchanged, the budget line rotates outward along the XX-axis and becomes less steep.

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Answer: True

Answer

The statement is True. A reduction in the price of good XX increases the horizontal intercept (IPx\frac{I}{P_x}) while keeping the vertical intercept (IPy\frac{I}{P_y}) fixed, causing the budget line to rotate outward along the XX-axis and decrease in slope (PxPy\frac{P_x}{P_y}), which makes it flatter.
A fall in the price of good XX increases the maximum purchasable quantity of good XX (IPx\frac{I}{P_x}), moving the horizontal axis intercept outward while the vertical axis intercept (IPy\frac{I}{P_y}) stays stationary. Since the slope magnitude is the price ratio PxPy\frac{P_x}{P_y}, a smaller PxP_x yields a smaller slope, making the budget line flatter.

Step-by-Step Solution

1
Identify the formulas for the budget line intercepts and slope.
Horizontal intercept = IPx\frac{I}{P_x}, Vertical intercept = IPy\frac{I}{P_y}, Absolute slope = PxPy\frac{P_x}{P_y}.
These equations define how income and prices determine the position and steepness of the budget line.
2
Analyze the impact of a decrease in PxP_x on the intercepts.
The horizontal intercept IPx\frac{I}{P_x} increases, while the vertical intercept IPy\frac{I}{P_y} remains unchanged.
Because income (II) and the price of good YY (PyP_y) are constant, only the maximum purchasable amount of good XX changes.
3
Evaluate the change in the slope of the budget line.
The absolute slope PxPy\frac{P_x}{P_y} decreases, indicating that the budget line becomes less steep (flatter).
A lower price for good XX reduces the opportunity cost of good XX in terms of good YY.

Key Concept

Impact of Price Changes on Budget Line Rotation and Slope
Question 9462Question

The following macroeconomic national income data are provided for a country in a given financial year (in millions of Naira):

Macroeconomic ComponentAmount (N\text{N} millions)
Personal consumption expenditure (CC)540540
Gross private domestic investment (II)185185
Government final expenditure (GG)210210
Exports (XX)130130
Imports (MM)155155
Net factor income from abroad (NFIANFIA)30-30
Consumption of fixed capital4545
Indirect taxes6565
Subsidies2020

Using the expenditure approach, calculate the Net National Product at factor cost (NNPfcNNP_{fc}) in millions of Naira.

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Answer: 790

Answer

The Net National Product at factor cost (NNPfcNNP_{fc}) is 790 million Naira.
To calculate Net National Product at factor cost (NNPfcNNP_{fc}) via the expenditure method: First, calculate Gross Domestic Product at market prices (GDPmp=C+I+G+XM=540+185+210+130155=910GDP_{mp} = C + I + G + X - M = 540 + 185 + 210 + 130 - 155 = 910). Next, add Net Factor Income from Abroad (NFIANFIA) to obtain Gross National Product at market prices (GNPmp=91030=880GNP_{mp} = 910 - 30 = 880). Then, deduct depreciation to obtain Net National Product at market prices (NNPmp=88045=835NNP_{mp} = 880 - 45 = 835). Finally, adjust for indirect taxes and subsidies (NNPfc=83565+20=790NNP_{fc} = 835 - 65 + 20 = 790 million Naira).

Step-by-Step Solution

1
Calculate Gross Domestic Product at market prices (GDPmpGDP_{mp})
GDPmp=540+185+210+(130155)=910GDP_{mp} = 540 + 185 + 210 + (130 - 155) = 910 million Naira
Apply the basic expenditure identity GDP=C+I+G+(XM)GDP = C + I + G + (X - M).
2
Calculate Gross National Product at market prices (GNPmpGNP_{mp})
GNPmp=910+(30)=880GNP_{mp} = 910 + (-30) = 880 million Naira
Add Net Factor Income from Abroad (NFIANFIA) to GDPmpGDP_{mp}.
3
Calculate Net National Product at market prices (NNPmpNNP_{mp})
NNPmp=88045=835NNP_{mp} = 880 - 45 = 835 million Naira
Subtract capital consumption allowance (depreciation) from GNPmpGNP_{mp}.
4
Adjust NNPmpNNP_{mp} for net indirect taxes to arrive at NNPfcNNP_{fc}
NNPfc=83565+20=790NNP_{fc} = 835 - 65 + 20 = 790 million Naira
Subtract indirect taxes and add subsidies to convert market price valuation into factor cost valuation.

Key Concept

Calculation of Net National Product at factor cost (NNPfcNNP_{fc}) from macroeconomic expenditure components.
Question 9463Question

Match each property of an indifference curve on the left with its correct economic explanation on the right.

Click a left item, then click its matching right item

Items

Downward slope from left to right
Convexity to the origin
Non-intersection of curves
Higher curve lying to the right

Matches

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Answer

Downward slope matches giving up one good for another to maintain constant utility; Convexity matches diminishing Marginal Rate of Substitution; Non-intersection matches transitivity and consistency; Higher curve matches higher total satisfaction.
Each property maps directly to its underlying postulate in ordinal utility theory: downward slope represents trade-offs under constant satisfaction, convexity represents diminishing MRSMRS, non-intersection guarantees transitivity, and higher curves denote greater total satisfaction.

Step-by-Step Solution

1
Analyze the downward slope property
Downward slope implies a negative relationship between quantities of the two goods, showing substitution to keep total satisfaction constant.
Since utility is constant along a single curve, increasing consumption of Good XX must be offset by decreasing Good YY.
2
Analyze the convexity property
Convexity reflects diminishing MRSxyMRS_{xy}.
As more of Good XX is consumed, the consumer values additional units of XX less relative to Good YY.
3
Analyze the non-intersection property
Curves cannot cross due to transitivity.
If two curves crossed, a single point of intersection would imply two different levels of satisfaction are equal, violating consistency.
4
Analyze the position of higher curves
Higher curves correspond to greater utility.
Due to monotonicity of preferences, more of a good is preferred to less.

Key Concept

Properties of Indifference Curves and ordinal utility theory assumptions
Question 9464Question

During a national industrialization campaign, a government authority formulates a scheme that directly allocates specific physical quantities of raw materials, equipment, and manpower to achieve designated production targets in various sectors. Which type of economic planning is demonstrated in this scenario?

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Answer: Physical planning

Answer

Physical planning
Physical planning directly quantifies and assigns real resources such as raw materials, machinery, and workers to specific production units to hit targeted physical output levels.

Step-by-Step Solution

1
Analyze the core resource allocation mechanism presented in the stem.
The scenario highlights direct allocation of real resources (raw materials, capital equipment, manpower) measured in physical quantities.
Identifying whether allocation is made in physical terms or monetary terms determines the planning category.
2
Distinguish between physical planning and other forms of planning.
Physical planning works directly with quantitative material balances and inputs, whereas financial planning uses monetary outlays.
This direct quantitative assignment of physical inputs defines physical planning.

Key Concept

Physical Planning vs Financial Planning
Estimated Time:45s
Question 9465Question

A fundamental property of a standard indifference curve is that it is convex to the origin. Which economic concept directly explains why an indifference curve has this convex shape?

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Answer: Diminishing marginal rate of substitution

Answer

Diminishing marginal rate of substitution
The convexity of an indifference curve to the origin is governed by the principle of diminishing marginal rate of substitution (MRSxyMRS_{xy}). As a consumer acquires successive units of one commodity along an indifference curve, their valuation of additional units of that good relative to the other good declines, meaning they sacrifice progressively smaller quantities of the second good.

Step-by-Step Solution

1
Identify the structural property of the indifference curve being evaluated
The curve is convex to the origin
Convexity refers to the inward curvature of the indifference curve toward the origin point on a two-good graph.
2
Analyze the rate at which the consumer substitutes one good for another along the curve
The Marginal Rate of Substitution (MRSxyMRS_{xy}) falls as consumption of Good X increases
To maintain equal satisfaction, equal additional units of Good X require giving up successively smaller quantities of Good Y.
3
Select the economic principle that matches this behavior
Diminishing marginal rate of substitution
The diminishing rate of substitution directly dictates the convex shape of standard indifference curves.

Key Concept

Diminishing Marginal Rate of Substitution and Indifference Curve Convexity
Question 9466Question

A solar energy equipment manufacturing firm located in Enugu doubles all of its production inputs, including both capital equipment and labor. Consequently, its total daily output of solar panels increases by 150%150\%. Which of the following long-run production concepts is illustrated by this firm's expansion?

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Answer: Increasing returns to scale

Answer

Increasing returns to scale
When a firm increases all factor inputs by a given proportion (here, doubling inputs equals a 100%100\% increase) and output rises by a larger proportion (150%150\%), the firm experiences increasing returns to scale.

Step-by-Step Solution

1
Calculate the percentage change in production inputs
Doubling all inputs represents a 100%100\% increase in scale.
Returns to scale examine how output responds when all inputs are varied proportionally in the long run.
2
Compare the percentage change in output with the percentage change in inputs
Output increased by 150%150\%, which is greater than the 100%100\% increase in inputs.
Evaluating the input-output ratio determines whether scale returns are constant, increasing, or decreasing.
3
Identify the economic concept
A more than proportionate increase in output relative to inputs signifies increasing returns to scale.
This relationship defines long-run economies of scale.

Key Concept

Scales of Production and Economies of Scale
Question 9467Question

Match each balance of payments adjustment policy measure listed on the left with its corresponding underlying economic mechanism on the right.

Click a left item, then click its matching right item

Items

Expenditure-Switching Policy
Expenditure-Reducing Policy
Direct Control Measure
Compensatory Financing

Matches

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Answer

Expenditure-Switching Policy pairs with diverting domestic demand via relative price changes; Expenditure-Reducing Policy pairs with dampening aggregate demand and national income; Direct Control Measure pairs with administrative/statutory import or currency restrictions; Compensatory Financing pairs with providing temporary external liquidity without structural adjustment.
Each adjustment measure relies on a distinct macroeconomic channel: expenditure-switching operates through relative price shifts to redirect demand; expenditure-reducing works by contracting overall domestic demand and national income; direct controls function through state rationing and quotas; and compensatory financing provides temporary external funds to accommodate the imbalance without fundamental real adjustment.

Step-by-Step Solution

1
Analyze Expenditure-Switching Policy
Identified mechanism of changing relative prices of domestic and foreign goods.
Devaluation or tariffs make imports relatively more expensive, causing domestic consumers to switch demand to local products.
2
Analyze Expenditure-Reducing Policy
Identified mechanism of depressing real income and aggregate domestic demand.
Tight fiscal or monetary policy reduces disposable income, which lowers marginal propensity to import and compresses total foreign spending.
3
Analyze Direct Control Measure
Identified mechanism of statutory or administrative trade restrictions.
Direct interventions rely on government directives, exchange controls, and quotas rather than market price mechanisms.
4
Analyze Compensatory Financing
Identified mechanism of temporary balance of payments accommodation.
Financing measures bridge short-term liquidity deficits by borrowing from external sources without correcting underlying structural imbalances.

Key Concept

Classification and Mechanisms of Balance of Payments Adjustment Policies
Question 9468Question

During an economic recession, raising the central bank's rediscount rate serves to expand credit creation by commercial banks and stimulate aggregate demand.

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Answer: False

Answer

The statement is False. Raising the rediscount rate is a contractionary monetary policy measure that makes borrowing more expensive, restricting credit expansion and lowering aggregate demand rather than stimulating economic activity.
The statement is false because increasing the rediscount rate is a contractionary monetary policy tool used to reduce money supply and control inflation. During a recession, the central bank would lower the rediscount rate to reduce lending rates, encourage borrowing, and boost aggregate spending.

Step-by-Step Solution

1
Determine the direction of the policy tool.
Raising the rediscount rate increases the cost of refinancing for commercial banks.
The rediscount rate is the interest rate charged by the central bank when discounting bills or lending money to commercial banks.
2
Analyze the impact on commercial bank lending and aggregate demand.
Higher costs force commercial banks to increase interest rates on customer loans, reducing loan volume and slowing economic activity.
This is a contractionary measure designed to curb inflation, whereas combating a recession requires expansionary measures such as lowering the rediscount rate.

Key Concept

Rediscount Rate Policy and Economic Stabilization
Question 9469Question

Match each geometric property of indifference curves in Column I with its underlying economic foundation or preference axiom in Column II.

Click a left item, then click its matching right item

Items

Downward slope from left to right
Convexity towards the origin
Non-intersection of indifference curves
Higher curve lying further from the origin

Matches

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Answer

Each geometric property maps to its corresponding economic principle: Downward slope relates to the necessary trade-off between goods to keep total utility constant; Convexity towards the origin reflects a diminishing marginal rate of substitution (MRSxyMRS_{xy}); Non-intersection ensures compliance with the axiom of transitivity; Higher curves reflect monotonicity of preferences (non-satiation).
Each geometric property directly corresponds to a fundamental behavioral assumption in ordinal utility theory: downward slope reflects the negative substitution trade-off required for constant utility; convexity reflects diminishing MRSxyMRS_{xy}; non-intersection preserves preference transitivity; and higher curves represent greater satisfaction due to non-satiation.

Step-by-Step Solution

1
Analyze the downward slope property
Downward slope implies a negative marginal rate of substitution (dYdX<0\frac{dY}{dX} < 0), requiring substitution of one good for another to maintain equal utility.
Because total utility along an indifference curve is constant (dU=MUxdX+MUydY=0dU = MU_x dX + MU_y dY = 0), an increase in XX must be balanced by a decrease in YY.
2
Analyze the convexity property
Convexity implies that the slope (MRSxyMRS_{xy}) diminishes in absolute magnitude as consumption of XX increases relative to YY.
As XX becomes more abundant, its marginal utility (MUxMU_x) falls relative to MUyMU_y, reducing the consumer's willingness to sacrifice YY for additional units of XX.
3
Analyze the non-intersection property
Intersecting curves violate preference consistency and transitivity.
If curve IC1IC_1 and IC2IC_2 intersect at point AA, and point BB lies on IC1IC_1 while point CC lies on IC2IC_2, transitivity implies BAB \sim A and AC    BCA \sim C \implies B \sim C, contradicting the requirement that distinct curves represent strictly different utility levels.
4
Analyze higher curve position
Curves located further from the origin represent higher utility levels.
Under monotonic preferences (non-satiation), consumption bundles containing more of both goods yield strictly greater satisfaction.

Key Concept

Properties of Indifference Curves and Preference Axioms
Question 9470Question

An economy's production possibility frontier for agricultural produce (AA) and manufactured capital (MM) is represented by the non-linear equation A2+4M2=400A^2 + 4M^2 = 400, where both AA and MM are measured in thousands of units. If the economy is currently operating efficiently by producing 12 thousand units of agricultural produce, what is the opportunity cost (in thousands of units) of manufactured capital sacrificed if agricultural output is increased to 16 thousand units?

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Answer: 2

Answer

The opportunity cost of increasing agricultural produce from 12 to 16 thousand units is 2 thousand units of manufactured capital.
Substituting the initial agricultural output (A=12A = 12) into the equation A2+4M2=400A^2 + 4M^2 = 400 yields M=8M = 8 thousand units. Substituting the target agricultural output (A=16A = 16) yields M=6M = 6 thousand units. The opportunity cost incurred is the difference between the initial and new manufactured capital outputs (86=28 - 6 = 2 thousand units).

Step-by-Step Solution

1
Calculate the initial quantity of manufactured capital produced.
Initial manufactured capital M1=8M_1 = 8 thousand units.
Substitute A=12A = 12 into the production possibility curve equation A2+4M2=400A^2 + 4M^2 = 400.
2
Calculate the new quantity of manufactured capital produced after increasing agricultural output.
New manufactured capital M2=6M_2 = 6 thousand units.
Substitute A=16A = 16 into the production possibility curve equation A2+4M2=400A^2 + 4M^2 = 400.
3
Determine the opportunity cost in terms of manufactured capital sacrificed.
Opportunity cost = 86=28 - 6 = 2 thousand units.
Opportunity cost measures the sacrifice of manufactured capital needed to gain additional agricultural produce along the PPC.

Key Concept

Opportunity Cost on a Non-Linear Production Possibility Curve
Question 9471Question

A agricultural processing factory in Benue State crushes soybeans to extract soybean oil for domestic cooking. In the same production process, soybean cake used for livestock feed is inevitably produced along with the oil. What type of supply is illustrated by soybean oil and soybean cake?

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Answer: Joint supply

Answer

Joint supply
Joint supply (also known as complementary supply) occurs when two or more goods are produced simultaneously from a single process or raw material. An increase in the output of the main product (soybean oil) automatically leads to an increase in the output of the byproduct (soybean cake).

Step-by-Step Solution

1
Identify the production relationship between soybean oil and soybean cake in the scenario.
Both products originate simultaneously from processing the same raw material (soybeans).
Understanding whether goods are produced together or compete for factors determines their supply classification.
2
Match the production relationship to the appropriate economic term.
Products that are derived together from the same origin represent joint supply.
An increase in the production of one product automatically increases the supply of the byproduct.

Key Concept

Joint (Complementary) Supply
Question 9472Question

If a consumer's nominal income increases by 50%50\% while the price of good XX increases by 50%50\% and the price of good YY remains constant, the budget line will pivot inward along the vertical axis while keeping its horizontal intercept unchanged.

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Answer: False

Answer

The statement is False. The budget line pivots outward along the vertical axis while maintaining a fixed horizontal intercept.
The horizontal intercept (I/PX)(I / P_X) remains identical because the 50%50\% increase in nominal income is exactly offset by the 50%50\% increase in the price of good XX. However, because the price of good YY does not change, the 50%50\% increase in income allows the consumer to purchase more of good YY, shifting the vertical intercept (I/PY)(I / P_Y) outward from the origin. Thus, the pivot is outward, making the statement false.

Step-by-Step Solution

1
Analyze the formula for the horizontal intercept.
The horizontal intercept is given by IPX\frac{I}{P_X}. With a 50%50\% increase in both II and PXP_X, the new intercept is 1.5I1.5PX=IPX\frac{1.5 I}{1.5 P_X} = \frac{I}{P_X}, which remains unchanged.
Proportionate changes in income and the price of a good cancel each other out for that good's axis intercept.
2
Analyze the formula for the vertical intercept.
The vertical intercept is given by IPY\frac{I}{P_Y}. With a 50%50\% increase in II and constant PYP_Y, the new intercept is 1.5IPY=1.5(IPY)\frac{1.5 I}{P_Y} = 1.5 \left(\frac{I}{P_Y}\right), which increases by 50%50\%.
Higher nominal income with an unchanged price expands the maximum affordable quantity of good YY.
3
Determine the direction of the rotational pivot and overall budget line movement.
Since the vertical intercept moves further out from the origin while the horizontal intercept stays fixed, the budget line pivots outward along the Y-axis and becomes steeper.
An inward pivot would require a decrease in maximum purchasable YY, which contradicts the 50%50\% increase in real purchasing power for good YY.

Key Concept

Rotational Pivot of the Budget Line under Non-Proportionate Price and Income Changes
Question 9473Question

Match each structural dimension of a traditional economic system on the left with its corresponding operational reality or systemic constraint on the right.

Click a left item, then click its matching right item

Items

Customary Resource Allocation
Barter Exchange Mechanism
Subsistence Production Goal
Technological Stagnation

Matches

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Answer

Customary Resource Allocation matches with allocation by ancestral heritage and social status; Barter Exchange Mechanism matches with direct swap constrained by double coincidence of wants; Subsistence Production Goal matches with production for communal survival rather than surplus; Technological Stagnation matches with slow innovation resulting from rigid adherence to tradition.
Each feature of the traditional economy directly aligns with its defining socioeconomic mechanism: Customary Resource Allocation relies on ancestral status; Barter Exchange Mechanism involves direct goods swapping without money; Subsistence Production Goal aims at fulfilling basic consumption needs; and Technological Stagnation stems from rigid adherence to ancestral techniques.

Step-by-Step Solution

1
Analyze the core institutional features of a traditional economy.
Identified that resource distribution relies on social structure/hereditary roles rather than market demand or central directives.
This links Customary Resource Allocation to land distribution by lineage and status.
2
Examine the mode of trade in non-monetized traditional societies.
Identified that trade occurs directly between goods without a formal currency unit.
This pairs Barter Exchange Mechanism with direct product swapping and the double coincidence of wants constraint.
3
Evaluate the underlying economic objective and output capacity.
Established that production targets local consumption and survival rather than commercial expansion.
This matches Subsistence Production Goal to communal survival focus.
4
Assess the rate of change and growth potential within traditional frameworks.
Recognized that deep respect for precedent inhibits adoption of modern technology.
This connects Technological Stagnation to the restriction of innovation caused by cultural taboos and custom.

Key Concept

Operational characteristics and constraints of a traditional economic system
Question 9474Question

In economic planning, financial planning allocates real physical inputs—such as raw materials, machinery, and labor hours—to production sectors, whereas physical planning balances aggregate monetary demand, expenditure, and national revenue streams.

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Answer: False

Answer

The statement is False.
The statement is false because it completely reverses the definitions of physical and financial economic planning. Physical planning focuses on assigning real material factors—such as labor, raw materials, and machinery—to specific industries using physical metrics. Conversely, financial planning regulates monetary flows, balancing total financial outlay with available national revenue and credit.

Step-by-Step Solution

1
Identify the core subject matter of physical planning in economic development.
Physical planning calculates material balances by coordinating physical inputs (raw materials, capital equipment, labor hours) required to achieve target outputs in non-monetary physical units.
To prevent supply bottlenecks, central planning requires structural alignment of physical resources.
2
Identify the core subject matter of financial planning in economic development.
Financial planning calculates monetary balances by coordinating financial liquidity, investment expenditures, public revenue, and national saving allocations.
Macroeconomic stability requires matching monetary demand with national income streams.
3
Compare the provided statement with established economic planning definitions.
The statement attributes physical resource allocation to financial planning and monetary balance management to physical planning, reversing both definitions.
Because the terms are inverted, the assertion is conceptually invalid.

Key Concept

Distinction Between Physical and Financial Economic Planning
Question 9475Question

Match each Terms of Trade concept or structural analytical framework on the left with its precise economic formulation and conceptual interpretation on the right.

Click a left item, then click its matching right item

Items

Single Factoral Terms of Trade (TsT_s)
Income Terms of Trade (TyT_y)
Gross Barter Terms of Trade (TgT_g)
Prebisch-Singer Hypothesis on Deterioration

Matches

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Answer

Single Factoral Terms of Trade matches with Tc×ZxT_c \times Z_x; Income Terms of Trade matches with Tc×QxT_c \times Q_x; Gross Barter Terms of Trade matches with (QmQx)×100\left(\frac{Q_m}{Q_x}\right) \times 100; and Prebisch-Singer Hypothesis matches with the long-run structural decline in primary commodity terms of trade due to low income elasticity of demand.
Each concept correctly aligns with its unique formula and analytical purpose: Single Factoral includes productivity (ZxZ_x), Income incorporates export volume (QxQ_x) to determine capacity to import, Gross Barter compares physical import-to-export quantities (Qm/QxQ_m / Q_x), and Prebisch-Singer explains long-term terms of trade determinants for developing economies.

Step-by-Step Solution

1
Analyze Single Factoral Terms of Trade (TsT_s)
Ts=(PxPm)×Zx=Tc×ZxT_s = \left(\frac{P_x}{P_m}\right) \times Z_x = T_c \times Z_x
Single factoral TOT incorporates productivity gains in the domestic export sector (ZxZ_x), showing import efficiency per productive factor employed.
2
Analyze Income Terms of Trade (TyT_y)
Ty=(PxPm)×Qx=Tc×QxT_y = \left(\frac{P_x}{P_m}\right) \times Q_x = T_c \times Q_x
Income terms of trade measures total purchasing power of exports by taking net barter TOT and multiplying by export quantity index (QxQ_x).
3
Analyze Gross Barter Terms of Trade (TgT_g)
Tg=(QmQx)×100T_g = \left(\frac{Q_m}{Q_x}\right) \times 100
Unlike net barter TOT which uses price indices (Px/PmP_x / P_m), gross barter TOT uses physical volume indices in reversed order (Qm/QxQ_m / Q_x).
4
Analyze the Prebisch-Singer Hypothesis on Determinants
Identified as structural deterioration of primary producers' TOT
This macroeconomic theory establishes that primary commodities suffer deteriorating terms of trade over time due to low income elasticity of demand and technical progress in industrial countries.

Key Concept

Classification, mathematical formulations, and structural determinants of Terms of Trade (Net Barter, Gross Barter, Income, Single Factoral, and Prebisch-Singer thesis).
Question 9476Question

During a macroeconomic appraisal, the central statistical office of a nation reported a Gross Domestic Product at market prices (GDPmpGDP_{mp}) of $1,250\$1,250 billion for the fiscal year. Additional national accounting records indicate Gross Domestic Capital Formation (II) of $310\$310 billion, Government Final Consumption Expenditure (GG) of $240\$240 billion, Exports (XX) of $180\$180 billion, Imports (MM) of $215\$215 billion, Net Factor Income from Abroad (NFIANFIA) of $45-\$45 billion, Depreciation of $70\$70 billion, and Net Indirect Taxes of $55\$55 billion. Using the expenditure approach of national income accounting, what is the value of Private Final Consumption Expenditure (CC)?

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Answer: $735\$735 billion

Answer

The Private Final Consumption Expenditure (CC) is $735\$735 billion.
Under the expenditure approach, GDPmp=C+I+G+(XM)GDP_{mp} = C + I + G + (X - M). Substituting the given values gives $1,250=C+$310+$240+($180$215)\$1,250 = C + \$310 + \$240 + (\$180 - \$215). Simplifying the right side yields $1,250=C+$515\$1,250 = C + \$515, which gives C=$735C = \$735 billion. Additional items such as Depreciation, Net Factor Income from Abroad, and Net Indirect Taxes are irrelevant for deriving GDPmpGDP_{mp} components.

Step-by-Step Solution

1
Identify the relevant GDP expenditure method formula
GDPmp=C+I+G+(XM)GDP_{mp} = C + I + G + (X - M)
The expenditure method aggregates private consumption, gross investment, government spending, and net exports to measure total output at market prices.
2
Calculate Net Exports (XMX - M)
Net Exports = $180 billion$215 billion=$35 billion\$180\text{ billion} - \$215\text{ billion} = -\$35\text{ billion}
Imports must be subtracted from exports to obtain the net export balance.
3
Substitute the known figures into the GDP identity
$1,250=C+$310+$240+($35)\$1,250 = C + \$310 + \$240 + (-\$35)
Plugging in the given values for GDPmpGDP_{mp}, II, GG, and (XM)(X - M).
4
Solve for Private Final Consumption Expenditure (CC)
$1,250=C+$515    C=$1,250$515=$735 billion\$1,250 = C + \$515 \implies C = \$1,250 - \$515 = \$735\text{ billion}
Rearranging the linear equation yields the correct figure for private consumption.

Key Concept

Expenditure Method of Measuring National Income
Question 9477Question

A country experiencing a persistent deficit in its balance of payments decides to adopt an expenditure-switching policy to achieve equilibrium. Which of the following actions directly represents an expenditure-switching measure?

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Answer: Devaluing the domestic currency to make exports cheaper and imports relatively more expensive

Answer

Devaluing the domestic currency to make exports cheaper and imports relatively more expensive
Devaluing the domestic currency makes local goods cheaper to foreign buyers and imports more expensive to domestic consumers. This alters relative price signals, encouraging consumers to switch expenditure away from foreign imports and toward domestic production, thereby correcting a balance of payments deficit.

Step-by-Step Solution

1
Identify the goal of expenditure-switching policies.
Expenditure-switching policies aim to alter the relative prices of foreign goods compared to home-produced goods.
This redirects or 'switches' domestic and foreign demand toward domestically manufactured products, boosting exports and curbing import demand.
2
Evaluate the options against expenditure-switching vs. expenditure-reducing definitions.
Currency devaluation directly changes price ratios between domestic goods and foreign goods, fitting expenditure-switching.
Tax hikes reduce general aggregate demand (expenditure-reducing), while removing tariffs increases import consumption.

Key Concept

Expenditure-Switching Adjustment Policies
Estimated Time:45s
Question 9478Question

Which of the following revenue relationships is a defining characteristic of a pure monopolist?

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Answer: Marginal revenue is less than average revenue at all positive levels of output

Answer

Marginal revenue is less than average revenue at all positive levels of output.
A monopolist faces the downward-sloping market demand curve. Since average revenue equals price (AR=PAR = P), reducing price to increase sales causes marginal revenue (MRMR) to fall twice as fast as average revenue, making MR<ARMR < AR for all positive output levels.

Step-by-Step Solution

1
Analyze the demand curve faced by a monopolist
The monopolist is the sole supplier in the industry, so its demand curve is the downward-sloping market demand curve (P=ARP = AR).
Since the firm is a price maker, selling additional units requires reducing the price on all previous units.
2
Derive the relationship between Average Revenue (AR) and Marginal Revenue (MR)
Because price must be lowered on all units to sell one additional unit, the additional revenue gained from the last unit (MRMR) is less than the price (ARAR) of that unit.
Mathematical relationship: MR=P+QdPdQMR = P + Q \cdot \frac{dP}{dQ}, where dPdQ<0\frac{dP}{dQ} < 0, ensuring MR<ARMR < AR for all Q>0Q > 0.

Key Concept

Revenue Characteristics of Monopoly
Question 9479Question

A palm oil processing enterprise operating in Ondo State doubles all of its production inputs (labor, land, and capital), resulting in a 130%130\% increase in total output and a fall in its long-run average cost per unit. Which economic phenomenon is the firm experiencing?

Show answer & explanation

Answer: Increasing returns to scale

Answer

The firm is experiencing increasing returns to scale because total output increases by a greater percentage (130%130\%) than the increase in factor inputs (100%100\%), lowering long-run average costs.
Increasing returns to scale occur in the long run when a proportional expansion of all production inputs results in a more than proportional increase in total output. Here, doubling inputs (100%100\% increase) produces a 130%130\% increase in output, reducing long-run unit costs.

Step-by-Step Solution

1
Calculate the percentage change in factor inputs
Doubling inputs represents a 100%100\% increase in all production factors in the long run.
Returns to scale examine output changes when all inputs change by a given proportion.
2
Compare the percentage change in output with the percentage change in inputs
Output growth (130%130\%) exceeds input growth (100%100\%).
When %ΔOutput>%ΔInputs\% \Delta \text{Output} > \% \Delta \text{Inputs}, the firm achieves economies of scale and experiences increasing returns to scale.

Key Concept

Increasing Returns to Scale
Estimated Time:1m 15s
Question 9480Question

The balance of payments statistics of a country show visible exports of 420million,visibleimportsof420 million, visible imports of 580 million, net receipts from invisible trade and official transfers of 60million,andnetcapitalinflowsof60 million, and net capital inflows of 40 million. What is the current account balance, and which expenditure-switching measure can be implemented to address this disequilibrium?

Show answer & explanation

Answer: Deficit of $100 million; Devaluation of the domestic currency

Answer

Deficit of $100 million; Devaluation of the domestic currency
The Current Account Balance is computed by adding net invisible receipts to the visible trade balance (420M420M - 580M + 60M=60M = - 100 million), indicating a deficit of $100 million. Capital inflows belong to the capital/financial account and are excluded. Devaluation is an expenditure-switching policy because it alters relative prices to shift expenditure from foreign imports to domestic substitutes.

Step-by-Step Solution

1
Calculate the Balance of Visible Trade
Visible Trade Balance = 420million(Exports)420 million (Exports) - 580 million (Imports) = -160million(Deficitof160 million (Deficit of 160 million)
Visible trade balance includes only tangible merchandise trade exports and imports.
2
Calculate the Current Account Balance
Current Account Balance = Visible Trade Balance (-160million)+NetInvisibleReceipts(160 million) + Net Invisible Receipts ( 60 million) = -100million(Deficitof100 million (Deficit of 100 million)
The current account comprises visible trade, invisible trade (services), and net transfers. Capital inflows are recorded under the capital/financial account and must be excluded.
3
Identify the appropriate policy category and measure
Expenditure-switching policy = Devaluation of domestic currency (or tariffs/quotas)
Expenditure-switching policies aim to redirect demand from foreign goods to domestically produced goods by altering relative prices. Devaluation directly lowers export prices in foreign currency and raises import prices in domestic currency.

Key Concept

Calculation of Balance of Payments Current Account and Classification of Adjustment Policies
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