The speed at which a girl can row a boat in still water is 75 kmph.

The speed at which a girl can row a boat in still water is 75 kmph. If he rows downstream, where the speed of current is 15 kmph, what time will he take to cover 300 metres?

Quiz

Answer/Solution

16

Steps/Work

Speed of the boat downstream = 75 + 15 = 90 kmph
= 90 * 5/18 = 25 m/s
Hence time taken to cover 400 m = 400/25 = 16 seconds. Answer: A

Physics Calculator / Auto Solver

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

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