Problem Page Isabel drove 355 miles using 17 gallons of gas. At this rate, how many gallons of gas would she need to drive 284 miles?

Divide 355 by 17 to found out how many miles per gallon of gas you would then get 20.88 which round to 21.

then divide 284 by 21 to see the how many gallons you will need.

your final answer should be 13.5 gallons of gas