In a stream running at 3 km/h, a motorboat goes 8 km upstream and back again to the starting point in 120 minutes. What is the speed of the motorboat in still water ?

In a stream running at 3 km/h, a motorboat goes 8 km upstream and b

1.	In a stream running at 3 km/h, a motorboat goes 8 km upstream and back again to the starting point in 120 minutes. What is the speed of the motorboat in still water ?
A.	8 kmh-1
B.	9 kmh-1
C.	10 kmh-1
D.	11 kmh-1
Answer» C. 10 kmh-1

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In a stream running at 3 km/h, a motorboat goes 8 km upstream and back again to the starting point in 120 minutes. What is the speed of the motorboat in still water ?

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