Cameron's car used 15 gallons to travel 675 miles. At what rate does the car use gas, in miles per gallon?
To find the rate at which the car uses gas, we divide the total distance traveled by the amount of gas used.
Rate = Distance / Gas used = 675 miles / 15 gallons = 45 miles per gallon.
Therefore, the car uses gas at a rate of 45 miles per gallon.