All practice questions

Why does a standard indifference curve slope downward from left to right?

When a government levies an indirect tax on a commodity, the entire tax burden is shifted forward to the consumer under which of the following market conditions?

In an open four-sector economy, the circular flow of income is in equilibrium when total leakages (withdrawals) equal total injections. If planned savings ($S$) is $\$80\text{ million}$, imports ($M$) are $\$45\text{ million}$, planned investment ($I$) is $\$95\text{ million}$, government expenditure ($G$) is $\$60\text{ million}$, and exports ($X$) are $\$40\text{ million}$, what is the required value of government tax revenue ($T$) in millions of dollars?

The following financial statistics were extracted from the national income accounts of an economy for a given fiscal year:

Using the income method, calculate the Gross Domestic Product ($GDP$) at factor cost in ₦ million.

In a fiscal year, a government spent a total of $\text{N}1.20\text{ trillion}$ on public expenditure. If capital expenditure on development projects accounted for $\text{N}450\text{ billion}$, what percentage of the total public expenditure was allocated to recurrent expenditure?

The following table presents the macroeconomic accounts of a West African economy for a given fiscal year:

Using the expenditure method, what is the Net National Product at factor cost ($NNP_{fc}$) of the country in millions of Naira?

In the reform of Nigeria's infrastructure sector, the federal government restructured a public transport enterprise to operate as a profit-making entity, eliminating financial subsidies while retaining 100% state equity ownership. Which economic policy measure does this restructuring represent?

A commercial aquaculture catfish farm operates in the short run with fixed pond facilities and variable labor ($L$). When $4$ units of labor are employed, the average product of labor ($AP_L$) is $25\text{ kg}$. Employing the $5\text{th}$ unit of labor yields a marginal product ($MP_L$) of $40\text{ kg}$. When the $6\text{th}$ unit of labor is added, the law of diminishing returns sets in, causing the marginal product of the $6\text{th}$ worker to decrease by $30\%$ relative to that of the $5\text{th}$ worker. What is the total product ($TP$) in kg when $6$ units of labor are employed?

When a growing bakery enterprise in Ogun State lowers its long-run average cost of production specifically by purchasing flour and sugar in bulk at discounted prices, this cost reduction is best described as which type of economy of scale?

A manufacturing firm in Ibadan operates along its Production Possibility Curve (PPC) producing two goods: garments and shoes. Currently, when producing $150$ pairs of shoes, the firm can produce $400$ units of garments. To meet increased market demand for footwear, the firm reallocates its resources to produce $250$ pairs of shoes, causing garment output to fall to $150$ units.

Calculate the opportunity cost of producing one additional pair of shoes in terms of garments foregone.

A manufacturing enterprise operating in the short run incurs a Total Fixed Cost ($\text{TFC}$) of $\text{₦}250$. Its Average Variable Cost ($\text{AVC}$) function is expressed as $\text{AVC} = 3Q^2 - 24Q + 75$, where $Q$ represents the output level in units. What is the firm's Average Total Cost ($\text{ATC}$) in Naira ($\text{₦}$) at the output level where Average Variable Cost ($\text{AVC}$) reaches its minimum?

A commercial farmer in Kaduna State owns a fixed 10-hectare plot of arable land that can be used to cultivate either maize or soybeans. Following a sharp increase in the market price of maize, the farmer reallocates 8 hectares to maize production, which leads to a direct reduction in the market supply of soybeans.

Which type of supply relationship is illustrated between maize and soybeans in this scenario?

A cinema operator charges adult moviegoers a higher admission fee while offering discounted ticket rates to students for the exact same movie screening. Which of the following conditions is essential for the cinema operator to successfully maintain this pricing practice?

Advancing desertification in Northern Nigeria significantly reduces the availability of fertile agricultural land, leading to a structural decline in crop production. Which of the following best describes the economic impact of this environmental degradation on the food market?

The South-Eastern geopolitical zone of Nigeria is most severely impacted by which of the following environmental degradation problems?

A monopolist can successfully practice third-degree price discrimination between two separated sub-markets even if the price elasticity of demand is identical in both sub-markets.

A consumer experiences a fall in the price of Good Y. As a result, the substitution effect causes the consumer to buy 8 additional units of Good Y, while the income effect leads the consumer to buy 3 fewer units of Good Y. What is the net total price effect on the quantity demanded of Good Y, and how is Good Y classified?

In a market for cassava flakes, the daily quantity demanded is given by the linear demand function $Q_d = 120 - 4P$ and the daily quantity supplied is given by the linear supply function $Q_s = 30 + 5P$, where $P$ is the price per bag in Naira ($\text{N}$). What is the market equilibrium price?

Consider an economy shifting its resource allocation framework from state central planning toward free enterprise. While this transition increases dynamic efficiency and price responsiveness, what primary structural compromise does the economy face regarding social welfare?

During a period of rapid urbanization, an economy experiences a severe deficit in affordable public housing alongside a surge in demand for luxury commercial real estate. If this economy operates strictly as a free market capitalist system, how will the basic economic problem of 'what to produce' be resolved?