[" A motorboat whose speed in still wate...

[" A motorboat whose speed in still water is "9km/h" ,goes "15km" downstream and comes back to the same "],[" spot,in a total time of "3" hours "45" minutes.Find the speed of the stream."],[" A motor boat whose speed is "18km/hr" in still was the stream."]

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[" A motorboat whose speed in still water is "9km/h" ,goes "15km" downstream and comes back to the same "],[" spot,in a total time of "3" hours "45" minutes.Find the speed of the stream."],[" A motor boat whose speed is "18km/hr" in still was the stream."]

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