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    Question

    A boat can cover 185 km in downstream in 5 hours and 120

    km in upstream in 12 hours. Find the speed of boat in still water.
    A 20.5 km/hr Correct Answer Incorrect Answer
    B 21.5 km/hr Correct Answer Incorrect Answer
    C 23.5 km/hr Correct Answer Incorrect Answer
    D 22.5 km/hr Correct Answer Incorrect Answer

    Solution

    Downstream speed of the boat = 185/5 = 37 km/hr Upstream speed of the boat = 120/12 = 10 km/hr Speed of boat in still water = (37 + 20)/2 = 23.5 km/hr

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