Amy's car gets 35 miles per gallon of gas on the highway. It gets 20 miles per gallon in the city. Amy drives 245 miles on the highway and 200 miles in the city.

How many gallons of gas does she use?
A. 8 gallons
B. 10 gallons
C. 15 gallons
D. 17 gallons

Question

Amy's car gets 35 miles per gallon of gas on the highway. It gets 20 miles per gallon in the city. Amy drives 245 miles on the highway and 200 miles in the city.
 
How many gallons of gas does she use?
A.	8 gallons
B.	10 gallons
C.	15 gallons
D.	17 gallons

anonymous · Answer

17.

fortytherapper · Answer

Lets start with the highway first.

If she drives 245 miles and gets 35 miles per gallon, do you know how to get gallons?

mathstudent55 · Answer

gas mileage = distance/gallons
gallons = distance/gas mileage

total gallons = highway distance/highway gas mileage + city distance/city gas mileage