Question

Karla drove her vehicle 12,000 miles last year. How many gallons of gasoline would she have saved last year had she driven a fuel-efficient hybrid car averaging 48 miles per gallon rather than an SUV averaging 15 miles per gallon?

Answer 1

Answer: Karla used $12000/15 = 800$ gallons to drive 12000 miles. Had she driven the hybrid, she would have used $12000/48 = 250$ gallons. Therefore, she would have saved $800 - 250 = \boxed{550}$ gallons.

Answer 2

550 gallons

Explanation:

Karla used 12000/15 = 800 gallons to drive 12000 miles. (12000÷15=800)

Had she driven the hybrid, she would have used 12000/48 = 250 gallons. (12000÷48=250)

Therefore, she would have saved 800 − 250 = 550 gallons.