The current of a stream runs at 1 km/h. A motorboat goes 35 km upstream and back again at the starting point in 12 h. What is the speed of motorboat in still water ?

The current of a stream runs at 1 km/h. A motorboat goes 35 km upstrea

1.	The current of a stream runs at 1 km/h. A motorboat goes 35 km upstream and back again at the starting point in 12 h. What is the speed of motorboat in still water ?
A.	7 km/h
B.	4 km/h
C.	6 km/h
D.	5 km/h
Answer» D. 5 km/h

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The current of a stream runs at 1 km/h. A motorboat goes 35 km upstream and back again at the starting point in 12 h. What is the speed of motorboat in still water ?

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