Practice Post UTME OAU economics 2022 Past Questions

Question 1

Consider a perfectly competitive market with n firms, each producing a homogeneous product. If the market demand curve is given by Qd = 100 - 2P and the marginal \cost (MC) of each firm is cons\tant at 10, what is the equilibrium price and quantity?

Correct A. \( P = 40, Q = 30 \)

B. \( P = 30, Q = 40 \)

C. \( P = 20, Q = 50 \)

D. \( P = 50, Q = 20 \)

Correct Answer: A

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Question 2

A monopolist faces a market demand curve given by Qd = 100 - 2P and has a marginal \cost (MC) of 10. If the firm's marginal revenue (MR) is given by MR = 20 - 2P, what is the firm's profit-maximizing quantity and price?

Correct A. \( Q = 20, P = 40 \)

B. \( Q = 30, P = 30 \)

C. \( Q = 40, P = 20 \)

D. \( Q = 50, P = 10 \)

Correct Answer: A

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Question 3

A firm's total revenue (TR) is given by TR = 100Q - 2Q^2. If the firm's total \cost (TC) is given by TC = 50Q + 10Q^2, what is the firm's profit-maximizing quantity?

Correct A. \( Q = 5 \)

B. \( Q = 10 \)

C. \( Q = 15 \)

D. \( Q = 20 \)

Correct Answer: A

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Question 4

A country's GDP is given by GDP = 100 + 20Y - 5Y^2, where Y is the country's income. If the country's GNP is given by GNP = 120 + 30Y - 10Y^2, what is the country's GDP-GNP gap?

Correct A. ( 20 )

B. ( 30 )

C. ( 40 )

D. ( 50 )

Correct Answer: A

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Question 5

A firm's production function is given by Q = 10L^0.5K^0.5, where L is labor and K is capital. If the firm's marginal product of labor (MPL) is given by MPL = 5L^{-0.5}K^{0.5}, what is the firm's MPL when L = 100 and K = 100?

Correct A. ( 0.5 )

B. ( 1 )

C. ( 1.5 )

D. ( 2 )

Correct Answer: A

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Question 6

A firm's demand function is given by Qd = 100 - 2P + 3Y, where Qd is the quantity demanded, P is the price, and Y is the income. If the price elasticity of demand is -2, what is the income elasticity of demand?

Correct A. -1

B. 1

C. 2

D. 3

Correct Answer: A

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Question 7

A perfectly competitive firm produces a good with a production function given by Q = 2L^0.5, where Q is the quantity produced and L is the labor input. If the firm's revenue function is given by R = 10Q, what is the marginal revenue product of labor?

A. 5

Correct B. 10

C. 20

D. 30

Correct Answer: B

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Question 8

A monopolist faces a demand curve given by P = 100 - Q. The firm's marginal \cost is given by MC = 10 + 2Q. What is the profit-maximizing quantity produced?

A. 20

B. 30

Correct C. 40

D. 50

Correct Answer: C

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Question 9

A consumer has an indifference curve given by U = 2X + 3Y, where U is the utility, X is the quantity of good X, and Y is the quantity of good Y. The budget constraint is given by 2X + 3Y = 12. What is the consumer's optimal bundle?

Correct A. (2, 4)

B. (4, 2)

C. (6, 0)

D. (0, 6)

Correct Answer: A

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Question 10

A country's GDP is given by the equation Y = C + I + G, where Y is the GDP, C is the consumption, I is the investment, and G is the government sp\ending. If the consumption function is given by C = 100 + 0.8Y, the investment function is given by I = 20 + 0.2Y, and the government sp\ending is given by G = 50, what is the country's GDP?

A. 200

B. 300

Correct C. 400

D. 500

Correct Answer: C

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Question 11

The government of Nigeria has introduced a new policy to increase the production of rice in the country. The policy includes providing subsidies to farmers, improving irrigation systems, and increa\sing the availability of fertilizers. However, the policy has been criticized for being too expensive and for potentially harming the environment. Which of the following is a potential benefit of the policy?

A. Increased rice production

Correct B. Improved food security

C. Reduced poverty

D. Increased government revenue

Correct Answer: B

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Question 12

A firm is considering two different production techno\logies to produce a certain good. The first techno\logy has a higher fixed \cost but a lower variable \cost, while the second techno\logy has a lower fixed \cost but a higher variable \cost. Which of the following is a potential advantage of the first techno\logy?

Correct A. Lower total \cost

B. Higher profit margin

C. Increased market share

D. Improved product quality

Correct Answer: A

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Question 13

The government of Nigeria has introduced a new tax policy to increase revenue. The policy includes a new tax on luxury goods and a reduction in the tax rate on essential goods. However, the policy has been criticized for being regressive and for potentially harming the poor. Which of the following is a potential benefit of the policy?

Correct A. Increased government revenue

B. Improved tax compliance

C. Reduced poverty

D. Increased economic growth

Correct Answer: A

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Question 14

A consumer is considering two different brands of a certain good. The first brand has a higher price but a higher quality, while the second brand has a lower price but a lower quality. Which of the following is a potential advantage of the first brand?

Correct A. Higher quality

B. Lower price

C. Improved durability

D. Increased market share

Correct Answer: A

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Question 15

The government of Nigeria has introduced a new policy to increase the production of agricultural products in the country. The policy includes providing subsidies to farmers, improving irrigation systems, and increa\sing the availability of fertilizers. However, the policy has been criticized for being too expensive and for potentially harming the environment. Which of the following is a potential benefit of the policy?

Correct A. Increased agricultural production

B. Improved food security

C. Reduced poverty

D. Increased government revenue

Correct Answer: A

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Question 16

The government of Nigeria has introduced a new policy to increase the production of rice in the country. The policy includes providing subsidies to farmers, improving irrigation systems, and increa\sing the availability of fertilizers. However, the policy has been criticized for being too expensive and not addres\sing the root causes of the problem. What type of economic policy is this?

Correct A. Supply-side policy

B. Demand-side policy

C. Fiscal policy

D. Monetary policy

Correct Answer: A

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Question 17

A firm is considering two different production processes to produce a certain good. Process A requires an initial investment of ₦100,000 and has a variable \cost of ₦50 per unit. Process B requires an initial investment of ₦150,000 and has a variable \cost of ₦30 per unit. If the firm produces 10,000 units of the good, what is the total \cost of production for each process?

Correct A. ₦500,000 for Process A and ₦300,000 for Process B

B. ₦600,000 for Process A and ₦400,000 for Process B

C. ₦700,000 for Process A and ₦500,000 for Process B

D. ₦800,000 for Process A and ₦600,000 for Process B

Correct Answer: A

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Question 18

The government of Nigeria has introduced a new tax policy to increase revenue. The policy includes a 10% tax on all goods and services, a 5% tax on income, and a 2% tax on property. What type of tax is this?

A. Direct tax

Correct B. Indirect tax

C. Progressive tax

D. Regressive tax

Correct Answer: B

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Question 19

A firm is considering two different production processes to produce a certain good. Process A requires an initial investment of ₦100,000 and has a variable \cost of ₦50 per unit. Process B requires an initial investment of ₦150,000 and has a variable \cost of ₦30 per unit. If the firm produces 10,000 units of the good, what is the elasticity of demand for each process?

Correct A. Inelastic for Process A and Elastic for Process B

B. Elastic for Process A and Inelastic for Process B

C. Unit elastic for Process A and Unit elastic for Process B

D. None of the above

Correct Answer: A

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Question 20

The government of Nigeria has introduced a new policy to increase the production of rice in the country. The policy includes providing subsidies to farmers, improving irrigation systems, and increa\sing the availability of fertilizers. However, the policy has been criticized for being too expensive and not addres\sing the root causes of the problem. What type of economic planning is this?

A. Short-term planning

B. Long-term planning

Correct C. Macro-economic planning

D. Micro-economic planning

Correct Answer: C

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Question 21

A firm's revenue function is given by R(x) = 100x - 2x^2. If the firm's marginal revenue is 50, find the value of x.

Correct A. 5

B. 10

C. 15

D. 20

Correct Answer: A

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Question 22

A consumer's utility function is given by U(x, y) = 2x + 3y. If the consumer's income is ₦1000 and the prices of x and y are ₦5 and ₦10 respectively, find the consumer's optimal bundle.

Correct A. x = 50, y = 100

B. x = 100, y = 50

C. x = 150, y = 0

D. x = 0, y = 150

Correct Answer: A

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Question 23

A firm is a pure monopolist with a demand function given by Q = 100 - 2P. If the firm's marginal \cost is 10, find the firm's optimal price and quantity.

Correct A. P = 40, Q = 30

B. P = 30, Q = 40

C. P = 20, Q = 50

D. P = 50, Q = 20

Correct Answer: A

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Question 24

A firm's supply function is given by Q = 2P + 10. If the demand function is given by Q = 100 - 2P, find the equilibrium price and quantity.

A. P = 20, Q = 30

B. P = 30, Q = 40

Correct C. P = 40, Q = 50

D. P = 50, Q = 60

Correct Answer: C

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Question 25

Agricultural production in Nigeria is characterized by a high degree of seasonality. Which of the following is a consequence of this seasonality?

Correct A. Increased food prices

B. Decreased food prices

C. Increased agricultural production

D. Decreased agricultural production

Correct Answer: A

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