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kondor19780726 [428]
3 years ago
14

A motorboat heads upstream on a river that has a current of 3 miles per hour. the trip upstream takes 5 hours, and the return tr

ip takes 2.5 hours. what is the speed of the motorboat? (assume that the motorboat maintains a constant speed relative to the water.)
Mathematics
1 answer:
makvit [3.9K]3 years ago
5 0
(V-v)*T=(V+v)*t
(V-3)*5=(V+3)*2,5
5V-15=2,5V+7,5
2,5V=22,5
V=9(mph)
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