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A man rows at a speed of 6 km/hr in still water. If the time taken to row a certain distance upstream is 4 times the time taken to row the same distance downstream, what is the speed of the river? | |
A. | 1.8 km/hr [Wrong Answer] |
B. | 3 km/hr [Wrong Answer] |
C. | 3.6 km/hr [Correct Answer] |
D. | 4 km/hr [Wrong Answer] |