Question
A person can swim at the rate of five kilometers per
hour in still water. The time taken by him to swim a certain distance downstream is 3 times the time taken by him to swim upstream. find the speed of the stream. type-sscSolution
Let the speed of boat in still water =B and speed of stream =S B=5km/h ATQ- (B+S) ×1=(B-S)3 B+S=3B-3S 2B=4S Put The value of B= 4S=10 S=2.5km/h
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