Mathematics, 17.10.2020 06:01, janyiareese12

Jim's car was averaging 15 miles per gallon of gasoline. After he had a tune up on the car, he noticed that the car now gets 20 miles per gallon. What was the percent of increase in the miles per gallon?

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Jim's car was averaging 15 miles per gallon of gasoline. After he had a tune up on the car, he notic...