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20 June, 11:20

If an automobile is able to travel 400 km on 47.2 l of gasoline, what is the gas mileage in miles per gallon?

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  1. 20 June, 11:31
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    Distance traveled = 400 km

    Volume of gas = 47.2 L

    Note that

    1 km = 0.62137 mi, or 1 mi = 1.609 km

    1 L = 0.264 gal (US)

    Therefore

    400 km = (400 km) * (0.62137 mi/km) = 248.548 mi

    47.2 L = (47.2 L) * (0.264 gal/L) = 12.4608 gal

    The gas mileage is

    (248.548 mi) / (12.4608 gal) = 19.95 mi/gal

    Answer: 20.0 miles per gallon (nearest tenth)
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