Suppose that both American and United charge a price of $300 each for a round-trip ticket between Chicago and Dallas. What is the price elasticity of demand for United flights between Chicago and Dallas?

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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2.21. Suppose that the market for air travel between
Chicago and Dallas is served by just two airlines, United
and American. An economist has studied this market and
has estimated that the demand curves for round-trip
tickets for each airline are as follows:
Q=10,000 -100PU +99PA (United's demand)
Q=10,000 -100PA +99PU (American's demand)
where Pu is the price charged by United, and P4 is the
price charged by American.
a) Suppose that both American and United charge a
price of $300 each for a round-trip ticket between
Chicago and Dallas. What is the price elasticity of
demand for United flights between Chicago and
Dallas?
b) What is the market-level price elasticity of demand
for air travel between Chicago and Dallas when both
airlines charge a price of $300? (Hint: Because United
and American are the only two airlines serving the
Chicago-Dallas market, what is the equation for the
total demand for air travel between Chicago and
Dallas, assuming that the airlines charge the same
price?)
Transcribed Image Text:2.21. Suppose that the market for air travel between Chicago and Dallas is served by just two airlines, United and American. An economist has studied this market and has estimated that the demand curves for round-trip tickets for each airline are as follows: Q=10,000 -100PU +99PA (United's demand) Q=10,000 -100PA +99PU (American's demand) where Pu is the price charged by United, and P4 is the price charged by American. a) Suppose that both American and United charge a price of $300 each for a round-trip ticket between Chicago and Dallas. What is the price elasticity of demand for United flights between Chicago and Dallas? b) What is the market-level price elasticity of demand for air travel between Chicago and Dallas when both airlines charge a price of $300? (Hint: Because United and American are the only two airlines serving the Chicago-Dallas market, what is the equation for the total demand for air travel between Chicago and Dallas, assuming that the airlines charge the same price?)
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