In a stream running at 3 km/h, a motorboat goes 12 km upstream and back to the starting point in 60 min. Find the speed of the motor boat in still water. (in km/h)_x005F_x000D_

In a stream running at 3 km/h, a motorboat goes 12 km upstream and bac

1.	In a stream running at 3 km/h, a motorboat goes 12 km upstream and back to the starting point in 60 min. Find the speed of the motor boat in still water. (in km/h)_x005F_x000D_
A.	2(2 + âˆš17)
B.	3(2 + âˆš17)
C.	2(4 + âˆš15)
D.	3(4 + âˆš17)
Answer» E.

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In a stream running at 3 km/h, a motorboat goes 12 km upstream and back to the starting point in 60 min. Find the speed of the motor boat in still water. (in km/h)_x005F_x000D_

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