SOLUTION: On a recent trip, George traveled 300 miles. The number of miles of highway driving was 4 times the number of miles of city driving. If his car gets 20 miles to the gallon in city

Question 314090: On a recent trip, George traveled 300 miles. The number of miles of highway driving was 4 times the number of miles of city driving. If his car gets 20 miles to the gallon in city driving, and 30 miles to the gallon on the highway, how much gas did he use?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Let city driving be x miles.
highway driving = 4 times city driving =4x
5x=300
x=60 city driving.
highway driving = 240 miles.
..
20 mpg in city.
in city 60 /20 = 3 gallons.
..
240 miles on highway.
30 mpg.
On highway 240/30 = 8 gallons
..
Total gas = 11 gallons
RELATED QUESTIONS
Hello, I would like some help with this problem, On a recent trip, George traveled... (answered by ankor@dixie-net.com,josmiceli)

tim’s car gets 3 more miles per gallon during highway driving than it does during city... (answered by josgarithmetic)

George traveled at 45 miles and hour. Write an expression for the number of miles George... (answered by jorel1380)

On a recent road trip, you drove 900 miles and visited 7 cities. The trip took 4 days,... (answered by Alan3354)

A car traveled 262 miles on a trip. During 90 miles of the trip, the car traveled through (answered by ankor@dixie-net.com)

I went on a trip that was a total of 300 miles. The first 100 miles I traveled at 60 mph. (answered by josgarithmetic)

During the first 30 miles of city driving, you average 40 miles per hour. For the... (answered by josgarithmetic,maurik34)

Lisa drove 62 1/2 miles to visit a friend. Three fourths of her trip was on the highway.... (answered by oscargut)

Jessica is driving on the highway. She begins the trip with 14 gallons of gas in her car. (answered by ankor@dixie-net.com)