marginal cost calculation

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You rent a car for $29.95. The first 150 miles are free, but each mile thereafter costs 15 cents. you drive it 200 miles. what is the marginal cost?

-- Phuntsok Dragpa (dragpa76@hotmail.com), October 07, 2004

Answers

7.50

-- hello (hello@aol.com), February 03, 2005.

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