A man can row 24 kmph in still water. It takes him thrice as long to row up as to row down the river. Find the rate of the stream?
Explanation:
Rate of upstream = X kmph
Rate of down stream = 3 x kmph
Rate of still water = (3x+x)2 = 2x
2x = 24
x = 12
Rate of upstream = 12
Rate of downstream = 36
Rate of stream = 36-12/2 = 12 kmph
