(Answered) A hunter wishes to cross a river that is 1 km wide and that

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A hunter wishes to cross a river that is 1 km wide and that flows with a speed of 3 km/h. The hunter uses a small powerboat that moves at a maximum speed of 11 km/h with respect to the water.

What is the time necessary for crossing if the hunter wishes to move neither up- stream nor downstream while crossing the river? Answer in units of min.

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