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2 January, 20:40

Donalds car used 8 gallons of gasoline to travel 340 miles after mechanic worked on the car you 7 gallons to travel 350 miles is the price of gasoline was approximately four hours from now how much less to the nearest cent per mile did it cost to run the car after the mechanic worked on it

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  1. 2 January, 21:10
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    Cost before

    8*4=32

    32/340=0.0941

    after

    7*4=28

    28/350=0.08 exactly

    about 1 cent per mile cheaper
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