WAEC Economics 2013 Objective — Question 16
Question 16 of 50 from the West African Examinations Council (WAEC) Economics 2013 Objective paper, with the correct answer and a full explanation.
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An increase in the supply of a commodity X automatically results in an increase in the supply of another commodity Y. This is a case of
- A. elastic supply
- B. joint supplyCorrect
- C. exceptional supply
- D. competitive supply
Explanation
When an increase in the price of X leads to an increase in supply of Y, X and Y are jointly supplied — they are produced together, so more of X supplied brings more of Y too. This is joint supply.
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