SOLUTION: Returning home form a backpacking weekend, akiko and larry drove at first for 4 hours on a winding mountain road. Once they hit they free way, they were able to increase their spee

Question 716008: Returning home form a backpacking weekend, akiko and larry drove at first for 4 hours on a winding mountain road. Once they hit they free way, they were able to increase their speed by 35 miles per hour, and they drove for 7 hours until they got home. If the entire trip was 597, miles how fast did they drive on the freeway?
Answer by josgarithmetic(39615) (Show Source): You can put this solution on YOUR website!
r = rate driven on the freeway
r-35 = rate on winding road

The distance parts:
Winding Road,
Freeway,
Whole Trip Home, , Find r.

Some arithmetic steps:

ANSWER RESULT, miles per hour on the freeway.
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