Discussion :: Boats and Streams

A man can row at 5 kmph in still water. If the velocity of current is 1 kmph and it takes him 1 hour to row to a place and come back, how far is the place?
Answer : Option A
Explanation :
Speed downstream = (5 + 1) kmph = 6 kmph.
Speed upstream = (5  1) kmph = 4 kmph.
Let the required distance be x km.
Then,  x  +  x  = 1 
6  4 
2x + 3x = 12
5x = 12
x = 2.4 km.
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