Aptitude - Boats and Streams - Discussion

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Q.

A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:  .                          
A. 4 B. 5
C. 6 D. 10

Answer: Option B
Explaination:

 


Discussion

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