Mathematics

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4 March, 03:16

Optimal Speed of a Truck A truck gets 600/x miles per gallon (mpg) when driven at a constant speed of x mph, where 40 ≤ x ≤ 80. If the price of fuel is $2.80/gal and the driver is paid $13/hr, at what speed is it most economical for the trucker to drive? (Round your answer to two decimal places.)

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