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?
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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