Can you determine the income effect of the price increase? If yes, how much is it? If not, why not?

Microeconomics A Contemporary Intro
10th Edition
ISBN:9781285635101
Author:MCEACHERN
Publisher:MCEACHERN
Chapter6: Consumer Choice And Demand
Section6.A: Appendix: Indifference Curves And Utility Maximization
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Can you determine the income effect of the price increase? If yes, how much is it? If not, why not?

Julie buys food and other goods. She has an income of $400 per month. The price of food is
initially $1.00 per unit. It then rises to $1.20 per unit. The prices of other goods do not change.
To help Julie out, her mother offers to send her a check each month to supplement her income.
Julie tells her mother, "Thanks, Mom. If you would send me a check for $50 per month, I would
be exactly as happy paying $1.20 per unit as I would have been paying $1.00 per unit and not
receiving the $50 from you."
Transcribed Image Text:Julie buys food and other goods. She has an income of $400 per month. The price of food is initially $1.00 per unit. It then rises to $1.20 per unit. The prices of other goods do not change. To help Julie out, her mother offers to send her a check each month to supplement her income. Julie tells her mother, "Thanks, Mom. If you would send me a check for $50 per month, I would be exactly as happy paying $1.20 per unit as I would have been paying $1.00 per unit and not receiving the $50 from you."
Expert Solution
Step 1

Income effect(IE) is the change in the amount of a good because of the increase in its price reduces the purchasing power of the consumer. IE can be either negative or positive depending whether the good is normal or inferior.

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