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Mathematics, 25.02.2020 19:00 pandamaknae2003

A motor boat goes down the stream 30 km and again returns to the
starting point in a total time of 4 hours and 30 minutes. If the speed of the
stream is 5 km/hr, then find the speed of the motor boat in still water.

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A motor boat goes down the stream 30 km and again returns to the
starting point in a total time...

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