You are the manager of a supermarket, and you know that the income elasticity of peanut butter is exactly −0.7. Due to the economic recession, you expect incomes to drop by 15 percent next year. How should you adjust your purchase of peanut butter?

Economics: Private and Public Choice (MindTap Course List)
16th Edition
ISBN:9781305506725
Author:James D. Gwartney, Richard L. Stroup, Russell S. Sobel, David A. Macpherson
Publisher:James D. Gwartney, Richard L. Stroup, Russell S. Sobel, David A. Macpherson
Chapter20: Consumer Choice And Elasticity
Section: Chapter Questions
Problem 7CQ
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You are the manager of a supermarket, and you know that the income elasticity of peanut butter is exactly −0.7. Due to the economic recession, you expect incomes to drop by 15 percent next year. How should you adjust your purchase of peanut butter?

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Step 1

Given information, 

  • Income elasticity of peanut butter: -0.7
  • Percentage decrease in the income: 15%

To find: change in the purchase of peanut butter

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