A car travels 300 miles on 12 gallons of gas. What is the miles-per-gallon?

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Miles per gallon is a rate that tells you how far you can travel for each gallon of gas. To find it, divide the total miles by the gallons used: 300 miles ÷ 12 gallons = 25 miles per gallon. So the car gets 25 miles per gallon, meaning each gallon lets you go about 25 miles.