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22 April, 11:28

Darlene's Caillou's 8 gallons of gasoline to travel 340 miles at mechanic work on the car and use 7 gallons of gasoline to travel 350 miles if the price of gasoline was approximately $4 per gallon how much less to the nearest cent per get a smile that it cost to run after the mechanic work on it

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  1. 22 April, 11:43
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    Before mechanic:

    340 miles with 8 gallons.

    A gallon costs $4, so 8 gallons cost 8 * $4 = $32.

    $32 per 340 miles = $32/340 = $0.0941/mile = 9.4 cents/mile

    After mechanic:

    350 miles with 7 gallons.

    7 gallons cost 7 * $4 = $28.

    $28 per 350 miles = $28/350 = $0.08/mile = 8 cents/mile

    The difference is 9.4 - 8 = 1.4.

    To the nearest cent, round 1.4 to 1.

    Answer: After the mechanic, it cost 1 cent per mile less to run the car.
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