When the price is $6.00, the quantity demanded is 20. When the price is $9.00, the quantity demanded is 16. Calculate the price elasticity of demand.  You must use the midpoint formula. Given the elasticity of demand, a 10% increase in price will cause quantity demanded to fall by what percentage?  Explain your answer. Is this demand elastic or inelastic?  Explain your answer. What is assumed about consumer income when you measure the price elasticity of demand? Walmart advertises that it has rolled back prices. If Walmart is rolling back prices to raise revenues, should it roll back prices on products that have a price elasticity of demand that is elastic or inelastic?  Explain your answer.

ECON MICRO
5th Edition
ISBN:9781337000536
Author:William A. McEachern
Publisher:William A. McEachern
Chapter5: Elasticity Of Demand And Supply
Section: Chapter Questions
Problem 4.9P: (Other Elasticity Measures) Complete each of the following sentences: a. The income elasticity of...
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When the price is $6.00, the quantity demanded is 20.
When the price is $9.00, the quantity demanded is 16.
  1. Calculate the price elasticity of demand.  You must use the midpoint formula.
  2. Given the elasticity of demand, a 10% increase in price will cause quantity demanded to fall by what percentage?  Explain your answer.
  3. Is this demand elastic or inelastic?  Explain your answer.
  4. What is assumed about consumer income when you measure the price elasticity of demand?
  5. Walmart advertises that it has rolled back prices. If Walmart is rolling back prices to raise revenues, should it roll back prices on products that have a price elasticity of demand that is elastic or inelastic?  Explain your answer.
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