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If a man rows at 5 km/hr in still water and 3.5 km/hr against the current his rate along the current is?

8.5 km/hr
6.5 km/hr
6 km/hr
4.25 km/hr

Correct Answer: 6.5 km/hr

Explanation:

Speed of current = 5 - 3.5 = 1.5 km/hr.
So the speed of man along the current = 5 + 1.5 = 6.5 km/hr

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