A man crosses the river perpendicular to river flow in time 
seconds and travels an equal distance down the stream in 
seconds. The ratio of man's speed in still water to the speed of river water will be :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Let velocity of man in still water be v and that of water with respect to ground be u.
Velocity of man perpendicular to river flow with respect to ground = 
Velocity of man downstream = v + u
As given. 
t = (v + u)T
(v 2 – u 2 )t 2 = (v + u) 2 T 2 (v – u)t
2 = (v + u)T 2 
= 
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