The distance travled in a car varies directly as the amount of gasoline used. If a car travles 640 miles and uses 32 gallons of gas, find the constant of variation or miles per gallon (mpg). (1 point)

Answer 1

To find the constant of variation or miles per gallon (mpg), we need to set up a proportion:

distance traveled / amount of gasoline used = miles per gallon

We know that the car traveled 640 miles and used 32 gallons of gas:

640 miles / 32 gallons = miles per gallon

The miles per gallon is 20 miles per gallon or 20 mpg.