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    Question

    A boat can cover 132 km in downstream in 11 hours and

    170 km in upstream in 17 hours. Find the speed of boat in still water
    A 13 km/hr Correct Answer Incorrect Answer
    B 10 km/hr Correct Answer Incorrect Answer
    C 12 km/hr Correct Answer Incorrect Answer
    D 11 km/hr Correct Answer Incorrect Answer

    Solution

    Downstream speed of the boat = 132/11 = 12 km/hr Upstream speed of the boat = 170/17 = 10 km/hr Speed of boat in still water = (12 + 10)/2 = 11 km/hr

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