Mathematics, 11.11.2020 17:00, palcochran1313

Darnell's car used 8 gallons of gasoline to travel 340 miles. After a mechanic worked on the car, it used 7 gallons of gasoline to travel 350 miles. How many more miles per gallon did Darnell's car travel after the mechanic worked on it?

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Darnell's car used 8 gallons of gasoline to travel 340 miles. After a mechanic worked on the car, it...