JAMB Economics 2019 Objective — Question 5

Question 5 of 40 from the Joint Admissions and Matriculation Board (JAMB) Economics 2019 Objective paper, with the correct answer and a full explanation.

If 100 units and 120 units of commodity X are supplied at ₦80 at different times, it means that there is

A. a change in supply
B. a change in the quantity supplied
C. an increase in the quantity suppliedCorrect
D. a decrease in the quantity supplied

Explanation

A change in supply refers to a bodily shift of the supply curve, while a change in the quantity supplied refers to a movement along the same supply curve. Since price stayed the same (₦80) while quantity supplied rose from 100 to 120, this is an increase in the quantity supplied.

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