A motor boat covers a certain distance downstream in 30 minutes, while it comes back in 45 minutes. If the speed of the stream is 5 km h what is the speed of the boat in still water
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d=vt
D[distance covered]=[1/2][V+5](downstream)
=[3/4][V-5] (upstream)
solving the equation V = speed of boat = 25
in still water = 20 km/h
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