A mans speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The mans speed against the current is:

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Boats and Streams Test 3
Q:8

8.5 km/hr

9 km/hr

10 km/hr

12.5 km/hr

Explanation:

Mans rate in still water = (15 - 2.5) km/hr = 12.5 km/hr.

Mans rate against the current = (12.5 - 2.5) km/hr = 10 km/hr.

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Speed of a boat in standing water is 14 kmph and the speed of the stream is 1.2 kmph. A man rows to a place at a distance of 4864 km and comes back to the starting point. The total time taken by him is:

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