Question

Alan drove 200 miles using 9 gallons of gas. At this rate, how many gallons of gas would he need to drive 420 miles?

Answer 1

He will need 18.9 gallons of gas to drive 420 miles.

Explanation:

200/9 = 22
`(2)/(9)`

He can drive 22 2/9 miles on 1 gallon of gas.

420 ÷ 200/9

420 x 9/200 = 18.9

He will need 18.9 gallons of gas to drive 420 miles.

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