The demand for dinners in the only restaurant in town has a unitary price elasticity of demand

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The demand for dinners in the only restaurant in town has a unitary price elasticity of demand when the current average price of a dinner is $8. At that price 120 people eat dinners at the restaurant every evening.
a) Find a linear demand curve that fits this information and draw it on a clearly labeled graph.
b) Do you need the information on the price elasticity of demand to find the curve? Why?
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Microeconomics

ISBN: 978-0073375854

2nd edition

Authors: Douglas Bernheim, Michael Whinston

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