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A man rows upstream 16 km and downstream 27 km talking 5 hours each time. What is the velocity of current?

2 km/hr
2.1 km/hr
1.1 km/hr
None of these

Correct Answer: 1.1 km/hr

Explanation:

Man's rate upstream = 16/5 km/hr
Man's rate downstream = 27/5 km/hr
∴ Velocity of the current = (27/5 - 16/5)/2 km/hr = 1.1 km/hr

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