POST UTME KSU 2023 Economics | Objective

Practice these randomly selected questions to test your readiness.

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?
A. \( P = 20, Q = 45 \)
B. \( P = 25, Q = 35 \)
C. \( P = 30, Q = 25 \)
D. \( P = 35, Q = 15 \)
Question 2
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%
D. 15%
Question 3
A firm's demand function is given by Q = 100 - 2P, where Q is the quantity demanded and P is the price. If the firm's current price is 20, calculate the firm's elasticity of demand.
A. \( E_d = 0.5 \)
B. \( E_d = 1 \)
C. \( E_d = 2 \)
D. \( E_d = -0.5 \)
Question 4
A firm's total revenue is given by \( TR = 100Q - 2Q^2 \), and its total \cost is given by \( TC = 50Q + 10Q^2 \). What is the profit-maximizing quantity?
A. 10
B. 20
C. 30
D. 40
Question 5
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
B. x = 150, y = 150
C. x = 100, y = 200
D. x = 200, y = 200
Question 6
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
B. 100
C. 200
D. 500
Question 7
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. \( P = 25, Q = 20 \)
C. \( P = 30, Q = 10 \)
D. \( P = 35, Q = 0 \)
Question 8
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 )
B. ( 20 )
C. ( 30 )
D. ( 40 )
Question 9
A country's money supply is given by the equation M = 1000 + 0.5Y, where M is the money supply and Y is the income. If the country's income is 100 billion naira, calculate the country's money supply.
A. \( M = 1500 \)
B. \( M = 1200 \)
C. \( M = 1000 \)
D. \( M = 500 \)
Question 10
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
B. x = 150, y = 150
C. x = 100, y = 200
D. x = 200, y = 200
Question 11
The production function for a firm is given by Q = 2L^0.5K^0.5, where Q is the output, L is the labor, and K is the capital. If the firm wants to increase its output by 25% while keeping the capital cons\tant at 9 units, what percentage increase in labor is required?
A. 15%
B. 20%
C. 25%
D. 30%
Question 12
The supply function for a good is given by Q = 2P - 50, where Q is the quantity supplied and P is the price. If the price is increased by 15%, what is the new quantity supplied?
A. 10
B. 20
C. 30
D. 40
Question 13
Consider a firm operating in a perfectly competitive market with a production function given by Q = 2L^0.5K^0.5. If the firm's current input prices are w = 10 and r = 20, and the firm's current output price is p = 50, calculate the firm's total revenue and marginal revenue.
A. \( TR = 50Q, MR = 50 \)
B. \( TR = 50Q, MR = 25 \)
C. \( TR = 25Q, MR = 50 \)
D. \( TR = 25Q, MR = 25 \)
Question 14
The demand function for a good is given by Q = 100 - 2P, where Q is the quantity demanded and P is the price. If the price is increased by 20%, what is the new quantity demanded?
A. 80
B. 90
C. 100
D. 110
Question 15
A firm is producing a good u\sing the production function Q = 3L^0.7K^0.3. If the firm wants to increase its output by 20% while keeping the capital cons\tant at 16 units, what percentage increase in labor is required?
A. 12%
B. 18%
C. 22%
D. 28%

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