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    Question

    A man rows to a place 221 km away and comes back to the

    starting point. If the speed of the stream is 2 km/hr and the speed of the boat in still water is 15 km/hr. Then what is the total time taken by him?
    A 16 hrs Correct Answer Incorrect Answer
    B 17 hrs Correct Answer Incorrect Answer
    C 20 hrs Correct Answer Incorrect Answer
    D 30 hrs Correct Answer Incorrect Answer

    Solution

    221/((15+2)) + 221/((15-2)) = 13 + 17 = 30 hrs

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