A man can row at 5 km/h in still water and the velocity of the current is 1 km/h. It takes him1 hour to row to a place and back. How flar is the place ?

(a) 1.2 km

(b) 1.8 km

(c) 2.4 km

(d) 3 km

(e) None of these

Ans.(c)

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