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    4. Boats and streams
    5. A boat running downstream covers a distance of 55 km in 5 hrs and covering the same distance upstrea

    Question

    A boat running downstream covers a distance of 55 km in

    5 hrs and covering the same distance upstream in 11 hrs. What is the speed of a boat in still water?
    A 10 km/hr Correct Answer Incorrect Answer
    B 9 km/hr Correct Answer Incorrect Answer
    C 7 km/hr Correct Answer Incorrect Answer
    D 8 km/hr Correct Answer Incorrect Answer

    Solution

    Downstream speed = 55/5 = 11 km/hr Upstream speed = 55/11 = 5 km/hr So speed of boat in still water = (11 + 5)/2 = 8 km/hr

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    Relevant for Exams:

    • FCI Assistant Grade 3

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