In a stream running at 3kmph. a boat goes 42 km upstream and comes back to the starting point in 306 minutes. What is the speed ol the boat in still water ?9

In a stream running at 3kmph. a boat goes 42 km upstream and comes

1.	In a stream running at 3kmph. a boat goes 42 km upstream and comes back to the starting point in 306 minutes. What is the speed ol the boat in still water ?9
A.	15 kmph
B.	16 kmph
C.	17 kmph
D.	18 kmph
Answer» D. 18 kmph

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In a stream running at 3kmph. a boat goes 42 km upstream and comes back to the starting point in 306 minutes. What is the speed ol the boat in still water ?9

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