Application
Chapter 5
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Elasticity . . .
… is a measure of how much buyers and sellers respond to changes in market conditions … allows us to analyze supply and demand with greater precision.
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Price Elasticity of Demand
Price elasticity of demand is the percentage change in quantity demanded given a percent change in the price.
It is a measure of how much the quantity demanded of a good responds to a change in the price of that good.
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Determinants of
Price Elasticity of Demand
Necessities versus Luxuries
Availability of Close Substitutes
Definition of the Market
Time Horizon
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Determinants of
Price Elasticity of Demand
Demand tends to be more elastic : if the good is a luxury. the longer the time period. the larger the number of close substitutes. the more narrowly defined the market.
Harcourt, Inc. items and derived items copyright © 2001 by Harcourt, Inc.
Computing the Price Elasticity of Demand
The price elasticity of demand is computed as the percentage change in the quantity demanded divided by the percentage change in price.
Percentage Change in Quantity Demanded
Price Elasticity of Demand =
Percentage Change in Price
Harcourt, Inc. items and derived items copyright © 2001 by Harcourt, Inc.
Computing the Price Elasticity of Demand
Price elasticity of demand =
Percentage change in quatity demanded
Percentage change in price
Example: If the price of an ice cream cone increases from $2.00 to $2.20 and the