Question

Suppose the cross-price elasticity of demand between goods X and Y is 4. How much would the price of good Y have to change in order to increase the consumption of good X by 20 percent?

Answer 1

Answer:

Increase by 5%.

Explanation:

Given that,

cross-price elasticity of demand between goods X and Y = 4

Percentage increase in consumption of good X = 20 %

cross-price elasticity of demand = Percentage change in quantity demanded for good X ÷ Percentage change in price of good Y

4 = 20 ÷ Percentage change in price of good Y

Percentage change in price of good Y = 20 ÷ 4

                                                                = 5%

Therefore, the price of good Y must be increase by 5% in order to increase the consumption of good X by 20 percent.