SOLUTION: Greg drove at a constant speed in a rainstorm for 266 miles. He took a break, and the rain stopped. He then drove 168 miles at a speed that was 4 miles per hour faster his previous

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Question 1020194: Greg drove at a constant speed in a rainstorm for 266 miles. He took a break, and the rain stopped. He then drove 168 miles at a speed that was 4 miles per hour faster his previous speed. If he drove for 11 hours, find the car's speed for each part of the trip.
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
           speed        time         distance
part1       r           266/r         266
part2       4r          168/(4r)      168
totals                  11


266%2Fr%2B168%2F%284r%29=11

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

Greg drove at a constant speed in a rainstorm for 266 miles. He took a break, and the rain stopped. He then drove 168 miles at a speed that was 4 miles per hour faster his previous speed. If he drove for 11 hours, find the car's speed for each part of the trip.
Speed for 266 miles: highlight_green%28matrix%281%2C2%2C38%2C+mph%29%29

Speed for 168 miles: highlight_green%28matrix%281%2C2%2C+42%2C+mph%29%29