SOLUTION: 17) Catherine drove her car for 2 hours on an icy road. When the road cleared up, she increased her speed by 35 miles per hour and drove 3 more hours, completing her 255 mile trip

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Question 1141401: 17) Catherine drove her car for 2 hours on an icy road. When the road cleared up, she increased her speed by 35 miles per hour and drove 3 more hours, completing her 255 mile trip how fast did she travel on the clear road?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
RT=D relates speed, time, distance.

r, the speed while on icy road

distance on icy road: 2r

distance when road cleared: (r+35)*3

Total distance was 255 miles.
2r%2B3%28r%2B35%29=255------solve for r and evaluate r+35.