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A boatman can...

Question

A boatman can row with a speed of $10$ km/h in still water. The river flows at $6$ km/h. If he crosses the river from one bank to other along the shortest possible path, the time taken in hours to cross the river of width $1$ km is:

40 m i n

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50 m i n

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64 m i n

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85 m i n

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Solution

The correct option is A $40 m i n$
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