If the price of product X increases from $10 to $12, the quantity demanded for gasoline (X) will  fall from 100 to 82 and the quantity demanded for  product Y also fall from 90 to 63 but the quantity demanded for product Z will increases from 50 to 76.  a.What is price elasticity of demand for X? b.What is cross-price elasticity of demand for Y with respect to price X? What are X and Y? c.What is cross-price elasticity of demand for Z with respect to price X? What are X and Z?

Exploring Economics
8th Edition
ISBN:9781544336329
Author:Robert L. Sexton
Publisher:Robert L. Sexton
Chapter6: Elasticities
Section: Chapter Questions
Problem 8P: If the elasticity of demand for hamburgers equals 21.5 and the quantity demanded equals 40,000,...
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If the price of product X increases from $10 to
$12, the quantity demanded for gasoline (X) will 
fall from 100 to 82 and the quantity demanded for 
product Y also fall from 90 to 63 but the quantity
demanded for product Z will increases from 50 to
76. 
a.What is price elasticity of demand for X?
b.What is cross-price elasticity of demand for Y
with respect to price X? What are X and Y?
c.What is cross-price elasticity of demand for Z
with respect to price X? What are X and Z?

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