SOLUTION: A motorboat starts out and travels 9 mph. In 3 hours another motorboat traveling 18 mph starts out to overtake the first one. In how many hours will the second boat overtake the fi

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Question 605391: A motorboat starts out and travels 9 mph. In 3 hours another motorboat traveling 18 mph starts out to overtake the first one. In how many hours will the second boat overtake the first?
Thank you! :D
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the 1st boat has a 27 mi head start (9 * 3)

the 2nd boat catches up at 9 mph (18 mph - 9 mph)

so it takes 3 hr to catch up (27 mi / 9 mph)