In the stream running at 3 kmph, a motorboat goes 12 km upstream and returns back to the starting point in 128 minutes. What is the speed of the boat in still water? (in kmph)

In the stream running at 3 kmph, a motorboat goes 12 km upstream and r

1.	In the stream running at 3 kmph, a motorboat goes 12 km upstream and returns back to the starting point in 128 minutes. What is the speed of the boat in still water? (in kmph)
A.	20
B.	12
C.	15
D.	25
Answer» C. 15

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In the stream running at 3 kmph, a motorboat goes 12 km upstream and returns back to the starting point in 128 minutes. What is the speed of the boat in still water? (in kmph)

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