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    Question

    The speed of a boat in still water is 9 km/hr and speed

    of current is 5 km/hr. If time taken to cover a certain distance upstream is 14 hours, then how long will the boat take to cover the same distance downstream?
    A 6 hrs Correct Answer Incorrect Answer
    B 5 hrs Correct Answer Incorrect Answer
    C 2 hrs Correct Answer Incorrect Answer
    D 4 hrs Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Total distance = 14 × (9 – 5) = 56 km Required time = 56/(9 + 5) = 4 hrs

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