negative or positive sign

Principles of Microeconomics
7th Edition
ISBN:9781305156050
Author:N. Gregory Mankiw
Publisher:N. Gregory Mankiw
Chapter5: Elastic And Its Application
Section: Chapter Questions
Problem 6PA: Suppose that your demand schedule for DVDs is as follows: Price Quantity Demanded (income = 10,000)...
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Please answer the question in the image and explain which answer should we select: negative or positive sign ?

Suppose that the quantity of pizza demanded decreased by 15 percent after an increase in
price of 10 percent. What is the price elasticity of demand for pizza?
Select one:
O a. 0.67
O b. -1.50
O c. 1.50
O d. -0.67
Transcribed Image Text:Suppose that the quantity of pizza demanded decreased by 15 percent after an increase in price of 10 percent. What is the price elasticity of demand for pizza? Select one: O a. 0.67 O b. -1.50 O c. 1.50 O d. -0.67
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