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Mathematics, 14.10.2019 14:00 arielpraczko1

Amotorboat traveling downstream covers the distance between port m and port n in 6 hours. once, the motorboat stopped 40 km before reaching n, turned around, and returned to m. this took the motorboat 9 hours. find the speed of the motorboat in still water if the speed of the current is 2 km/hour.

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