The speed of a boat in still water is 10 km/hr. It covers (upstream) a distance of 45 km in 6 hours. The speed (in km/hr) of the stream is :

The speed of a boat in still water is 10 km/hr. It covers (upstream) a

1.	The speed of a boat in still water is 10 km/hr. It covers (upstream) a distance of 45 km in 6 hours. The speed (in km/hr) of the stream is :
A.	3.5 km/h
B.	4 km/h
C.	2.5 km/h
D.	3 km/h
Answer» D. 3 km/h

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The speed of a boat in still water is 10 km/hr. It covers (upstream) a distance of 45 km in 6 hours. The speed (in km/hr) of the stream is :

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