Question

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

Answer 1

Given : Andre drove 200 Miles using 9 Gallons of Gas

⇒ Andre drives 1 Mile using
`[(9)/(200)]\;Gallons\;of\;Gas`

⇒ Andre drives (420 × 1 Mile) using
`[(420*9)/(200)]\;Gallons\;of\;Gas`

⇒ Andre drives 420 Miles using 18.9 Gallons of Gas