The speed of a boat in still water is 2 km/hr. If its speed upstream be 1 km/hr, then speed of the stream is ?

The speed of a boat in still water is 2 km/hr. If its speed upstream b

1.	The speed of a boat in still water is 2 km/hr. If its speed upstream be 1 km/hr, then speed of the stream is ?
A.	2 km/hr
B.	3 km/hr
C.	1 km/hr
D.	None of these
Answer» D. None of these

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