All practice questions

An individual consumes two commodities, $X$ and $Y$, with market prices $P_x = \text{₦}150$ and $P_y = \text{₦}50$ respectively. At a given point $K$ on their budget constraint, the marginal rate of substitution of $X$ for $Y$ ($MRS_{xy}$) equals $3$. Why is the condition $MRS_{xy} = \frac{P_x}{P_y}$ at point $K$ alone NOT sufficient to guarantee a stable consumer equilibrium under ordinal utility theory?

During a period of demand-pull inflation, the Central Bank of Nigeria aims to restrict credit expansion by commercial banks. Which of the following monetary policy measures will directly reduce the commercial banks' excess reserves and limit their ability to create money?

During a specific trading period, a nation's import price index rose to $160$ relative to a base year index of $100$. If the nation's Net Barter Terms of Trade for the period was recorded as $87.5$, by what percentage did the export price index change from the base year?

A bakery purchases flour for $50,000$, sugar for $20,000$, and utility services for $10,000$ to produce bread, which is sold to final consumers for $120,000$. If a statistician computes the national income contribution by summing the revenues of all four transactions, by how much is the national output overstated due to double counting?

A firm operating in a monopolistically competitive market currently produces $10$ units of output where its marginal revenue ($MR$) equals marginal cost ($MC$). At this output, the product sells at a market price ($P$) of $\$40$, while the average total cost ($ATC$) is $\$30$. Based on economic theory, which of the following long-run market adjustments will occur, and what will be the resulting economic profit position of this firm?

A petroleum refinery operating in Rivers State processes crude oil through fractional distillation, resulting in the simultaneous production of premium motor spirit (petrol) and bitumen from the same refining process. An increase in the output of petrol automatically leads to an increase in the output of bitumen. Which type of supply is demonstrated in this scenario?

In an economy undergoing structural reform, the government privatizes consumer goods manufacturing and allows prices to float based on market forces, but maintains absolute state monopoly and price controls over upstream raw materials and heavy infrastructure. Which of the following best analyzes the primary operational outcome of this resource allocation framework?

If a consumer's total money income and the price of Good $X$ (plotted on the horizontal axis) both double while the price of Good $Y$ (plotted on the vertical axis) remains constant, the horizontal intercept of the budget line remains unchanged while the line becomes steeper.

In Nigeria, merchant banks are structured to operate as wholesale financial institutions that primarily deal with corporate clients rather than opening retail checking accounts for individual retail depositors.

Match each obstacle to economic development in developing nations on the left with its correct economic mechanism or structural manifestation on the right.

A commercial poultry feed processing firm operating in Kaduna State expands its manufacturing plant and installs automated milling machinery. Consequently, its long-run average cost per unit declines due to the mechanical efficiency and high capacity of the new capital equipment. Which specific category of internal economies of scale is this firm experiencing?

A consumer is indifferent among five bundles of Commodity $X$ and Commodity $Y$ as presented in the schedule below:

Based on this schedule, what is the Marginal Rate of Substitution of $X$ for $Y$ ($MRS_{xy}$) when the consumer moves from combination R to combination S, and what fundamental geometric property of the indifference curve does the overall trend of $MRS_{xy}$ demonstrate?

In an island economy, the physical volume of transactions ($T$) during a fiscal year is $40,000$ units and the average price level ($P$) is $15$ units of currency per transaction. If the total stock of money ($M$) in circulation is $50,000$ units of currency, what is the velocity of money circulation ($V$)?

An economic researcher recorded the price per bag of cocoa (in thousands of Naira) across five key agricultural markets as $₦14$, $₦18$, $₦20$, $₦22$, and $₦26$. What is the coefficient of variation of these cocoa prices?

Fast-food outlets and retail clothing shops frequently attempt to distinguish their goods from rival sellers using distinct packaging, brand names, and customer service styles. Which primary feature of monopolistic competition does this practice illustrate?

A consumer allocating a fixed income between Good $X$ and Good $Y$ faces market prices of $P_x = \text{₦}60$ and $P_y = \text{₦}15$. At their current consumption bundle, the Marginal Rate of Substitution ($MRS_{xy}$) is $3$. Assuming standard indifference curves that are strictly convex to the origin, how should the consumer adjust their purchases to attain equilibrium?

Match the short-run cost concepts in List I with their corresponding mathematical definitions or behavioral characteristics in List II.

Match each economic system listed on the left with its corresponding major structural defect or operational limitation on the right.

Which of the following primary functions distinguishes commercial banks from non-bank financial intermediaries?

According to Ragnar Nurkse's economic development theory, low capital accumulation perpetuates underdevelopment through a self-reinforcing circular chain of cause and effect. Which of the following represents the correct logical sequence of stages in the supply-side vicious circle of poverty, starting from low worker productivity?