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1. |
In a stream running at 2 kmh'1, a boat goes 60 km upstream and back again to the starting point in 16 hours. What is the speed of the boat in still water ? |
A. | 8 kmph |
B. | 9 kmph |
C. | 9 kmph |
D. | 10 kmph |
Answer» B. 9 kmph | |