Practice Post UTME KSU economics 2023 Past Questions

Question 1

Consider a firm operating in a perfectly competitive market with a demand curve given by Qd = 100 - 2P and a supply curve given by Qs = 2P - 10. If the firm's marginal \cost (MC) is 5, what is the profit-maximizing price and quantity?

Correct A. $ P = 20, Q = 45 $

B. $ P = 25, Q = 35 $

C. $ P = 30, Q = 25 $

D. $ P = 35, Q = 15 $

Correct Answer: A

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Question 2

A country's balance of payments (BOP) is given by the following equation: BOP = $ X - M $ + $ F - I $. If the country's exports (X) are 100, imports (M) are 80, foreign direct investment (F) is 20, and domestic investment (I) is 30, what is the BOP?

A. ( 10 )

Correct B. ( 20 )

C. ( 30 )

D. ( 40 )

Correct Answer: B

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Question 3

A government is considering a tax on a particular good. The supply curve of the good is given by Qs = 2P - 10, and the demand curve is given by Qd = 100 - 2P. If the government imposes a tax of 5 on the good, what is the new equilibrium price and quantity?

A. $ P = 20, Q = 30 $

B. $ P = 25, Q = 20 $

Correct C. $ P = 30, Q = 10 $

D. $ P = 35, Q = 0 $

Correct Answer: C

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Question 4

A firm is considering investing in a new project. The project has a \cost of 100 and is expected to generate a revenue of 120. What is the net present value (NPV) of the project?

A. ( 20 )

Correct B. ( 30 )

C. ( 40 )

D. ( 50 )

Correct Answer: B

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Question 5

A country's GDP is given by the equation: GDP = C + I + G + $ X - M $. If the country's consumption (C) is 500, investment (I) is 200, government sp\ending (G) is 300, exports (X) are 400, and imports (M) are 300, what is the GDP?

A. ( 1500 )

B. ( 1600 )

Correct C. ( 1700 )

D. ( 1800 )

Correct Answer: C

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Question 6

A monopolistically competitive firm faces a downward-sloping demand curve. If the firm increases its price, what will happen to its total revenue?

A. Total revenue will increase

Correct B. Total revenue will decrease

C. Total revenue will remain unchanged

D. Total revenue will increase initially but then decrease

Correct Answer: B

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Question 7

A country's GDP can be calculated u\sing the following formula: $ Y = C + I + G + \( X - M \ $ ). If the country's consumption is ₦500 billion, investment is ₦200 billion, government sp\ending is ₦300 billion, exports are ₦400 billion, and imports are ₦200 billion, what is the country's GDP?

Correct A. ₦1,100 billion

B. ₦1,200 billion

C. ₦1,300 billion

D. ₦1,400 billion

Correct Answer: A

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Question 8

A firm is considering two investment projects. Project A has a 10% chance of earning ₦100 million and a 90% chance of earning ₦50 million. Project B has a 20% chance of earning ₦150 million and an 80% chance of earning ₦25 million. Which project has a higher expected return?

Correct A. Project A

B. Project B

C. Both projects have the same expected return

D. Neither project has a higher expected return

Correct Answer: A

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Question 9

A country's inflation rate is 5% per annum. If the country's central bank wants to reduce inflation to 3% per annum, what should it do?

A. Increase the money supply

Correct B. Decrease the money supply

C. Increase interest rates

D. Decrease interest rates

Correct Answer: B

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Question 10

A firm is producing a good u\sing two inputs, labor and capital. The production function is given by $ Q = 10L^0.5K^0.5 $. If the firm wants to produce 100 units of the good, how much labor should it hire if it has already hired 10 units of capital?

A. 20 units of labor

B. 30 units of labor

Correct C. 40 units of labor

D. 50 units of labor

Correct Answer: C

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Question 11

A government imposes a tax on a firm's profits. The firm's supply curve shifts to the left, resulting in a decrease in the quantity supplied. What is the effect on the firm's revenue?

A. The firm's revenue increases

Correct B. The firm's revenue decreases

C. The firm's revenue remains unchanged

D. The firm's revenue increases, but at a decrea\sing rate

Correct Answer: B

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Question 12

A firm is producing a good u\sing a production function with cons\tant returns to scale. If the firm increases its input of labor by 10%, what is the percentage change in output?

A. 10%

B. 5%

Correct C. 0%

D. 15%

Correct Answer: C

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Question 13

A government is considering a policy to increase the price of a good to reduce its demand. The demand curve for the good is given by Qd = 100 - 2P. What is the price elasticity of demand at a price of 20?

Correct A. 0.5

B. 1

C. 2

D. 5

Correct Answer: A

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Question 14

A firm is producing a good u\sing a production function with increa\sing returns to scale. If the firm increases its input of labor by 10%, what is the percentage change in output?

A. 10%

B. 5%

C. 0%

Correct D. 15%

Correct Answer: D

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Question 15

A government is considering a policy to increase the price of a good to reduce its demand. The demand curve for the good is given by Qd = 100 - 2P. What is the price elasticity of demand at a price of 40?

A. 0.5

B. 1

Correct C. 2

D. 5

Correct Answer: C

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Question 16

A firm's revenue function is given by R(x) = 100x - 2x^2, where x is the number of units produced. If the firm's marginal revenue is 50 at x = 10, what is the value of the firm's total revenue at x = 20?

A. ₦2000

Correct B. ₦2500

C. ₦3000

D. ₦3500

Correct Answer: B

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Question 17

A consumer's utility function is given by U(x, y) = 2x + 3y, where x and y are the quantities of two goods consumed. If the consumer's income is ₦1000 and the prices of the two goods are ₦2 and ₦3 respectively, what is the consumer's optimal bundle of goods?

A. x = 200, y = 100

Correct B. x = 150, y = 150

C. x = 100, y = 200

D. x = 200, y = 200

Correct Answer: B

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Question 18

A firm's \cost function is given by C(x) = 100 + 2x^2, where x is the number of units produced. If the firm's revenue function is R(x) = 100x - 2x^2, what is the firm's profit function?

Correct A. 100x - 4x^2 - 100

B. 100x - 2x^2 - 100

C. 100x + 2x^2 - 100

D. 100x + 4x^2 - 100

Correct Answer: A

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Question 19

A consumer's indifference curve is given by U(x, y) = 2x + 3y, where x and y are the quantities of two goods consumed. If the consumer's income is ₦1000 and the prices of the two goods are ₦2 and ₦3 respectively, what is the consumer's optimal bundle of goods?

A. x = 200, y = 100

Correct B. x = 150, y = 150

C. x = 100, y = 200

D. x = 200, y = 200

Correct Answer: B

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Question 20

A firm's supply function is given by Q = 100 + 2P, where P is the price of the good. If the firm's revenue function is R(P) = 100P - 2P^2, what is the firm's marginal revenue?

Correct A. 100 - 4P

B. 100 + 4P

C. 100 - 2P

D. 100 + 2P

Correct Answer: A

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Question 21

A consumer's indifference curve is given by U(x, y) = 2x + 3y, where x and y are the quantities of two goods consumed. If the consumer's income is ₦1000 and the prices of the two goods are ₦2 and ₦3 respectively, what is the consumer's optimal bundle of goods?

A. x = 200, y = 100

Correct B. x = 150, y = 150

C. x = 100, y = 200

D. x = 200, y = 200

Correct Answer: B

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Question 22

A firm's \cost function is given by C(x) = 100 + 2x^2, where x is the number of units produced. If the firm's revenue function is R(x) = 100x - 2x^2, what is the firm's profit function?

A. 100x - 4x^2 - 100

B. 100x - 2x^2 - 100

C. 100x + 2x^2 - 100

D. 100x + 4x^2 - 100

Correct Answer: VIEW ANSWER

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Question 23

Consider a perfectly competitive market with multiple firms producing a homogeneous product. If the market price is $P = 10, and the inverse demand function is given by $ P = 100 - Q $, where ( Q ) is the total quantity demanded, what is the equilibrium quantity?

A. 50

Correct B. 100

C. 200

D. 500

Correct Answer: B

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Question 24

A monopolist faces a demand curve given by $ Q = 100 - 2P $, where ( Q ) is the quantity demanded and ( P ) is the price. If the marginal \cost function is $ MC = 10 + 2Q $, what is the profit-maximizing quantity?

A. 20

B. 40

Correct C. 60

D. 80

Correct Answer: C

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Question 25

A country's GDP is $100 billion, and its GNP is $120 billion. What is the net factor income from abroad?

Correct A. $10 billion

B. $20 billion

C. $30 billion

D. $40 billion

Correct Answer: A

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