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A person can row a boat at the rate of 5km/hr in still water. He takes thrice as much time in going 40km upstream as in going 40 km downstream. Find the

speed of the stream.
the speed of the stream is 0.


Given, speed of the boat in still water = 5 km/hrLet the speed of the stream be x km/hr∴ Speed of the boat upstream = (5 – x) km/hrSpeed of the boat downstream = (5 + x) km/hr Given, time to cover 40 km upstream = 3 × time to cover 40 km downstream  thus the speed of the steam is 5 divided by 2 km/hr
0 0 0
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