b) Suppose that the price of jeans rises to $30a pair , how many shoes and jeans will she buy? c) To what effect (income or substitution) do you attribute the change in utility levels between part a and part b

Micro Economics For Today
10th Edition
ISBN:9781337613064
Author:Tucker, Irvin B.
Publisher:Tucker, Irvin B.
Chapter6: Consumer Choice Theory
Section: Chapter Questions
Problem 3SQP
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Elizabeth makes $200 a week at het summer job and spends her entire weekly income on new
running shoes and jeans, since these are only two items that provide utility to her. Furthermore,
Elizabeth insists that for every pair of jeans she buys, she must also buy a pair of shoes.
(without the shoes, the new jeans are worthless). Therefore, she buys the same number of pairs
of shoes and jeans in any given week.
a) If jeans cost $20 and shoes cost $20 , how many will Elizabeth buy of each?
b) Suppose that the price of jeans rises to $30a pair , how many shoes and jeans will she
buy?
c) To what effect (income or substitution) do you attribute the change in utility levels between part a and part b

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