A man can row with the stream at 7 km / hr and against the stream at 3 km / hr. His speed in s

Question

A man can row with the stream at 7  km / hr and against the stream at 3  km / hr. His speed in s

Accepted Answer

Step 1: Let the speed of the man in still water be ( x ) km/hr and let the speed of the stream b

A man can row with the stream at $7 \mathrm{~km} / \mathrm{hr}$ and against the stream at $3 \mathrm{~km} / \mathrm{hr}$. His speed in still water is: (a) $6.5 \mathrm{~km} / \mathrm{hr}$ (b) $7 \mathrm{~km} / \mathrm{hr}$ (c) $5 \mathrm{~km} / \mathrm{hr}$ (d) None of these