Boats and Streams

Quantitative Aptitude (Phase-1)

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A man can swim at the rate of 4 km/hr in still water. If the speed of the water is 2 km/hr, then the time taken by him to swim 10 km upstream

5/2 hrs

7/2 hrs

5 hrs

4 hrs

Explanation:

Speed of man in still water, x = 4 km/h
Speed of water, y = 2 km/h
Upstream speed, U = 4 – 2= 2 km/h
Upstream time = Distance/ Upstream speed = 10/2 = 5 hours

By: Pranav Gupta

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