The speed at which a man can row a boat in still water is 15 kmph. If he rows downstream, where the speed of current is 3 kmph, what time will he take to cover 60 metres?

Basic Maths Mcqs Boats and Streams 13/10/2020

A. 10 seconds
B. 15 seconds
C. 20 seconds
D. 12 seconds
E. None of these

Explanation:

Speed of the boat downstream = 15 + 3 = 18 kmph

= 18 * 5/18 = 5 m/s
Hence time taken to cover 60 m = 60/5 = 12 seconds.

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