SOLUTION: tim’s car gets 3 more miles per gallon during highway driving than it does during city driving. on a recent trip, tim drives 136 miles on the highway and 155 miles in the city us

Algebra ->  Finance -> SOLUTION: tim’s car gets 3 more miles per gallon during highway driving than it does during city driving. on a recent trip, tim drives 136 miles on the highway and 155 miles in the city us      Log On


   



Question 1168248: tim’s car gets 3 more miles per gallon during highway driving than it does during city driving. on a recent trip, tim drives 136 miles on the highway and 155 miles in the city using a total of 9 gallons of gasoline. how many miles per gallon does tim’s car gets during city driving?
Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
fuelefficiency=distance%2Ffuelvolume

                    FUELEFFICIENCY       VOLUME        DISTANCE

Highway              r+3                 136/(r+3)      136

City                 r                   155/r          155

TOTAL                                      9

The needed equation should be obvious.