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    Question

    A boat can cover 120 km in downstream in 5 hours and 144

    km in upstream in 18 hours. Find the speed of boat in still water
    A 16 km/hr Correct Answer Incorrect Answer
    B 12 km/hr Correct Answer Incorrect Answer
    C 14 km/hr Correct Answer Incorrect Answer
    D 17 km/hr Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Downstream speed of the boat = 120/5 = 24 km/hr Upstream speed of the boat = 144/18 = 8 km/hr Speed of boat in still water = (24 + 8)/2 = 16 km/hr

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