A man can swim downstream at 6 know and upstream at 2kmph. His speed in still water is?
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Let men's speed X km/hr and water's speed is Y km/h
Then, in upstream x+y=6...... Eq no 1
And in downstream x-y=2 .....eq no 2
Then eq 1+eq 2
x+x+y-y=6+2
Or, 2x=8
Therefore, x=8/2=4
So the man's speed is 4km/h
Then, in upstream x+y=6...... Eq no 1
And in downstream x-y=2 .....eq no 2
Then eq 1+eq 2
x+x+y-y=6+2
Or, 2x=8
Therefore, x=8/2=4
So the man's speed is 4km/h
mohitgang035p283yv:
Good work
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