SOLUTION: A motorboat starts out and travels 9 miles an hour. In 3 hours another motorboat traveling at 18 miles an hour starts out to overtake the first one. In how many hours will the seco

Question 905177: A motorboat starts out and travels 9 miles an hour. In 3 hours another motorboat traveling at 18 miles an hour starts out to overtake the first one. In how many hours will the second boat take over the first?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
A motorboat starts out and travels 9 miles an hour. In 3 hours another motorboat traveling at 18 miles an hour starts out to overtake the first one. In how many hours will the second boat take over the first?
***
3*9=27=distance 2nd boat must overtake the 1st boat
18-9=9=speed at which 2nd boat is overtaking 1st boat
travel time=distance/speed=27/9=3
how many hours will the second boat take over the first? 3
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