A boat running upstream covers a distance of 10 km in 30 min and while running downstream, it covers the same distance in 25 min away and return, then the speed of the water current is ?

A boat running upstream covers a distance of 10 km in 30 min and while

1.	A boat running upstream covers a distance of 10 km in 30 min and while running downstream, it covers the same distance in 25 min away and return, then the speed of the water current is ?
A.	2 km/h
B.	3 km/h
C.	1/2 km/h
D.	1 km/h
Answer» D. 1 km/h

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