A man can row 6km hr in still water If the speed of the current is 2km hr it takes 4 hours more in u...........

Quant (SSC) Boats and Streams

A man can row 6km/hr in still water. If the speed of the current is 2km/hr, it takes 4 hours more in upstream than in the downstream for the same distance. Find the distance.

44km

40km

32km

50km

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Explanation:

Let the distance be D.
Downstream speed = 8 km/hr
Upstream speed = 4km/hr
From the question,
Upstream = Downstream + 4
D/4 = D/8 + 4
D/4 = (D + 32)/8
D = 32 km