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1. |
A man swims a certain distance downstream in 5 hours and returns the same distance in 10 hours. The rate of stream flow is 2 kmh'. Then what is the speed of the man in still water ? |
A. | 2 km/h |
B. | 3 km/h |
C. | 5 km/h |
D. | 6 km/h |
Answer» E. | |