Bill drove 420 miles using 18 gallons of gas. At this rate, how many gallons of gas would he need to drive 357 miles?

Respuesta :

Divide 420 by 18 to find how many miles per gallon he gets:

420 / 18 = 23.33 miles per gallon.

Divide 357 miles by 23.33 miles per gallon to find out how many gallons are needed:

357 / 23.33 = 15.3 gallons