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    Question

    The speed of a boat in still water is 6 km/hr more than

    that of the current. The time taken by the boat to cover 625 km downstream is 12.5 hours. Find the total time taken by boat to travel 340 km downstream and 45 km upstream.
    A 10.3 hours Correct Answer Incorrect Answer
    B 12.3 hours Correct Answer Incorrect Answer
    C 14.3 hours Correct Answer Incorrect Answer
    D 13.3 hours Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Therefore, downstream speed of the boat = 625/12.5 = 50 km/hr And, upstream speed of the boat = 6 km/hr Required time taken = (340/50) + (45/6) = 6.8 + 7.5 = 14.3 hours

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