When the local electricity company charges a price of $20 per kilowatt they sell 1,000 units. If they raise the price by $1 they sell 800 units. What is the marginal revenue between $20 and $21?

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Author:Tucker, Irvin B.
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Chapter8: Perefect Competition
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When the local electricity company charges a price of $20 per kilowatt they sell 1,000 units. If they raise the price by $1 they sell 800 units. What is the marginal revenue between $20 and $21?

 

a) $21 b) $3,200 c) $200 d) $1

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