Question

If a man can swim downstream at 6 km/h, upstream at 2 km/h, his spreed in still water is?

Answer 1

let speed of man =X

speed of stream=y

speed while going upstream =X-y

speed while coming downstream =X-y

so according to the question

X-y=2

X+y=6

so X = 4km/hr

speed of man in still water=4km/hr