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Tuesday, 18 August 2026
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Economics Past Questions and Answers

Topic: Theory of Costs and Revenue

Jamb Economics Questions - Theory of Costs and Revenue

Question 61:
At any given level of output, the total cost of a firm equals the?
  • A Marginal cost plus the average cost
  • B Fixed costs less its varriable cost
  • C Average cost multiplied by variable costs
  • D Economic costs multiplied by variable costs
View Answer & Explanation
Question 62:
At any given level of output, a firm's total variable cost equals ?
  • A Total cost less marginal cost
  • B Total cost less total fixed costs
  • C Total cost less average cost
  • D Average variable cost and marginal cost
View Answer & Explanation
Question 63:
At any given level of output, a firm's total variable cost equals ?
  • A Total cost less marginal cost
  • B Total cost less total fixed costs
  • C Total cost less average cost
  • D Average variable cost and marginal cost
View Answer & Explanation
Question 64:
Consider the following diagram where XYZ represents the average curve of a firm. XY shows that as out put increases the average declines. However, this decline cannot continue indefinitely because
  • A Managerial economies
  • B Indivisibilities
  • C The extent of the market
  • D The pooling of dissimilar risks
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Question 65:
Consider the table which shows output (o), total cost (TC)of production and marginal cost (MC) for a firm in a competitive market. Suppose price (P) = N 12, what is the maximum profit the firm can make ?
  • A N2000.00
  • B 1 200.00
  • C 1000.00
  • D 400.00
View Answer & Explanation