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A man rows boat - 40 km upstream in 8 hours and a distance of 36 km. downstream in 6 hours, Then speed of stream is
0.5 km/hr
1.5 km/hr
1 km/hr
3 km/hr
Let the speed of boat in still water = x km/h Speed of a stream = y km/h Speed of boat in Downstream = x + y km/h Speed of boat in Upstream = x – y km/h Upstream = 40/8 = 5 km/hr Downstream = 36/6 = 6 km/hr Speed of stream = (6 – 5)/2 = 0.5 km/h
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