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 motorboat in still water. (in km/h)

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 motorboat in still water. (in km/h)
A.	2(4 + √15)
B.	3(4 + √17)
C.	2(2 + √17)
D.	3(2 + √17)
Answer» C. 2(2 + √17)

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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 motorboat in still water. (in km/h)

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