Question

4) Gas mileage is the number of miles you can drive on a a gallon of gasoline.

A test of a new car results in 450 miles on 20 gallons of gas. How far could
you drive on 40 gallons of gas? What is the car's gas mileage?

Answer 1

900 miles

Explanation:

Simply multiply 450 by 2.

40 ÷ 20 = 2

450 x 2 = 900

OR

Based on Proportion:

`(450)/(20)` x
`(x)/(40)`

Cross multiply:

450 x 40 = 18,000

20 x X = 20x

20x = 18,000

Divide by 20:

x = 18,000 ÷ 20

Solve:

x = 900