Question

If it takes 15 gallons of gas to drive 330 miles how many miles can be driven using 20 gallon of gas

Answer 1

15 / 330 = 20 / x...15 gal. to 330 miles = 20 gal to x miles
cross multiply because this is a proportion
(15)(x) = (20)(330)
15x = 6600
x = 6600/15
x = 440 <=== 20 gallons will take u 440 miles