Question

    A boat can cover 150 km in downstream in 5 hours and 144

    km in upstream in 12 hours. Find the speed of boat in still water
    A 21 km/hr Correct Answer Incorrect Answer
    B 22 km/hr Correct Answer Incorrect Answer
    C 25 km/hr Correct Answer Incorrect Answer
    D 26 km/hr Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Downstream speed of the boat = 150/5 = 30 km/hr Upstream speed of the boat = 144/12 = 12 km/hr Speed of boat in still water = (30 + 12)/2 = 21 km/hr

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