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A boat covers a certain distance downstream in 1 hour, while it comes back in 1(1/2) hours. If the speed of the stream be 3 kmph, what is the speed of the boat in still water? | |
A. | 12kmph [Wrong Answer] |
B. | 13kmph [Wrong Answer] |
C. | 14kmph [Wrong Answer] |
D. | 15kmph [Correct Answer] |