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4 February, 09:36

Davids car used 8 gallons of gasoline to travel 340 miles. After a mechanic worked on the car it used 7 gallons to travel 350 miles. If the price of gasoline was approximately $4.00 per gallon, how much less, to the nearest cent per mile, did it cost to run his car after the mechanic worked on it

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  1. 4 February, 09:53
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    That would be. 400 / (350/7 - 340/8)
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