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    4. Boats and streams
    5. A man rows to a place 42 km away and comes back to the starting point. If the speed of the stream is

    Question

    A man rows to a place 42 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 5 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
    E 25 hrs Correct Answer Incorrect Answer

    Solution

    42/((5+2)) + 42/((5-2)) = 6 + 14 = 20 hrs

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    • RBI Grade B

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