A man rowing at the rate of 5km/hr in still water and takes thrice as much time in going 40 km upstream as in going downstream. Find the speed of the stream.
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LET SPEED OF STREAM Xkm/hrs
speed of downstream = x+5 km/hrs
speed in upstream = x-5 km/hrs
time = d/s
40/x+5 + 40/x-5
speed of downstream = x+5 km/hrs
speed in upstream = x-5 km/hrs
time = d/s
40/x+5 + 40/x-5
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