People’s average incomes fall from £1,000 a week to £600 a week. As a result, demand for  potatoes increases from 1 million tonnes to 1.2 million tonnes a week. The income elasticity  of demand for potatoes is A. -0.25 B. 0.6 C. -0.5  D. -2

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Chapter1: Making Economics Decisions
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People’s average incomes fall from £1,000 a week to £600 a week. As a result, demand for 
potatoes increases from 1 million tonnes to 1.2 million tonnes a week. The income elasticity 
of demand
for potatoes is
A. -0.25
B. 0.6
C. -0.5 
D. -2

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