The price of coffee dropped sharply last month, while the quantity sold remained the same. Each of five people suggests an explanation: A: demand decreased, but supply was perfectly inelastic; B: demand decreased, but it was perfectly inelastic; C: demand decreased, but supply increased at the same time; D: supply increased, but demand was unit elastic; E: supply increased, but demand was perfectly inelastic.   a. Draw each graph of demand and supply curves for each explanation of A,B,C,D,E, respectively.   b. Whose explanations are correct?

Microeconomics A Contemporary Intro
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ISBN:9781285635101
Author:MCEACHERN
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Chapter5: Elasticity Of Demand And Supply
Section: Chapter Questions
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The price of coffee dropped sharply last month, while the quantity sold remained the same. Each of five people suggests an explanation:

A: demand decreased, but supply was perfectly inelastic;

B: demand decreased, but it was perfectly inelastic;

C: demand decreased, but supply increased at the same time;

D: supply increased, but demand was unit elastic;

E: supply increased, but demand was perfectly inelastic.

 

a. Draw each graph of demand and supply curves for each explanation of A,B,C,D,E, respectively.

 

b. Whose explanations are correct?

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