SOLUTION: Kathryn went to the study group traveling 25 mph and returned home traveling 20 mph. If the total trip took 9 hours, how long did Kathryn travel at each speed?
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Question 1123151: Kathryn went to the study group traveling 25 mph and returned home traveling 20 mph. If the total trip took 9 hours, how long did Kathryn travel at each speed? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! x hours at 25 mph or 25x miles
9-x hours at 20 mph or 20(9-x) miles
The distances are equal
25x=180-20x
45x=180
x=4 hours
at 25 mph, 100 miles
9-x=5 hours
at 20 mph, 100 miles
