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    Question

    The wheel of an engine 5 (1/9) meters  in circumference

    makes five revolutions in 4 seconds. Find the speed of the train in km per hour.
    A 23 km/hr Correct Answer Incorrect Answer
    B 24 km/hr Correct Answer Incorrect Answer
    C 26 km/hr Correct Answer Incorrect Answer
    D 25 km/hr Correct Answer Incorrect Answer

    Solution

    5 revolution = 4 seconds Then, 1 revolution = 4/5 seconds Speed = Distance/Time = [(46  × 5 )/(9  × 4)]  × (18/5) =  23 km/hr

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