JAMB Economics 1999 Question 3

Question 3

Basic Concepts

The shape of a production possibility frontier is determined by the

  1. A.increasing relative costs
  2. B.returns to scale
  3. C.diminishing returns to a fixed factor
  4. D.increasing returns to a variable factor.
Show the answer and explanation

Answer: A (increasing relative costs)

Explanation

The frontier bows outward because each extra unit of one good costs more and more of the other good: increasing relative (opportunity) costs.