A person rows a kilometre down the stream in 10 minute and upstream in 30 minutes. Find the velocity of the stream ?

A person rows a kilometre down the stream in 10 minute and upstream in

1.	A person rows a kilometre down the stream in 10 minute and upstream in 30 minutes. Find the velocity of the stream ?
A.	1 km/hr
B.	2 km/hr
C.	3 km/hr
D.	4 km/hr
Answer» C. 3 km/hr

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