A boat takes 9 hours to travel a distance upstream and takes 3 hours to travel the same distance downstream. If the speed of the boat in still water is 4 Km/hr, What is the velocity of the stream ?

A boat takes 9 hours to travel a distance upstream and takes 3 hour

1.	A boat takes 9 hours to travel a distance upstream and takes 3 hours to travel the same distance downstream. If the speed of the boat in still water is 4 Km/hr, What is the velocity of the stream ?
A.	2 Km/hr
B.	4 Km/hr
C.	3 Km/hr
D.	6 Km/hr
Answer» B. 4 Km/hr

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A boat takes 9 hours to travel a distance upstream and takes 3 hours to travel the same distance downstream. If the speed of the boat in still water is 4 Km/hr, What is the velocity of the stream ?

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