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A man can row downstream at 14 km/hr and upstream at 9km/hr. Man's rate in still water is?

5 km/hr
23 km/hr
11.5 km/hr
None of these of these

Correct Answer: 11.5 km/hr

Explanation:

Man's rate in still water = (14 + 9)/2 km/hr = 11.5 km/hr

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