The distance traveled in a car varies directly as the amount of gasoline used. If a car travels 520 miles and uses 26 gallons of gas, find the constant of variation or miles per gallon.

Responses
A 18 mpg18 mpg
B 20 mpg20 mpg
C 22 mpg22 mpg
D 24 mpg

The constant of variation or miles per gallon can be found by taking the distance traveled and dividing by the amount of gasoline used.

520 miles / 26 gallons = 20 mpg

Therefore, the constant of variation or miles per gallon is 20 mpg.

So, the correct answer is B) 20 mpg.