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in Linear Equations by (47.3k points)
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A person, rowing at the of 5 km/h in still water, takes thrice as much time in going 40 km upstream as in going 40 km downstream. Find the speed of the stream.

1 Answer

+1 vote
by (49.8k points)
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Best answer

Let the speed of the stream be v km/h.

Given that, a person rowing in still water = 5 km/h

The speed of a person rowing in downstream = (5 + v) km/hr

and the speed of a person has rowing in upstream = (5 - v) km/hr

Now, the person taken time to cover 40 km downstream,

and the person has taken time to cover 40 km upstream,

Hence, the speed of the stream is 2.5 km/h.

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