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

##### 1 Answer

Dec 9, 2016

Rachel would need 18.9 gallons to drive 420 miles at the same rate of consumption.

#### Explanation:

We can state the problem as a ratio:

Write this as an equation gives:

We can now solve for