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Darnell's car used 8 gallons of gasoline to travel340 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 dollars per galloon how much less to the neares cent per mile did it cost to run the car after the mechanic worked on it

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morgaine816
Before the repair: 340 miles/8 gallons = 42.5 m/g    42.5 m/g/$4 per gallon= $10.63 

After the repair: 350 miles/7 gallons= 50m/g  50m/g/$4 per gallon=$12.50

$12.50-$10.63 = $1.87

He saves $1.87 per mile

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