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    Question

    In a 30 km race, M, N, and O are running at uniform speed.

    If ‘M’ beats ‘N’ by 6 km, and ‘N’ beats ‘O’ by 4 km, then by how many metres does ‘M’ beat ‘O’?
    A 9200 m Correct Answer Incorrect Answer
    B 2550 m Correct Answer Incorrect Answer
    C 3110 m Correct Answer Incorrect Answer
    D 7400 m Correct Answer Incorrect Answer

    Solution

    ATQ,

    When ‘M’ covers 30 km, ‘N’ will cover 24 km

    Similarly, when ‘N’ covers 30 km, ‘O’ covers 26 km

    Therefore, when ‘N’ covers 24 km, then ‘O’ will cover = (24 × 26) / 30 = 20.8 km

    Therefore, ‘M’ will beat ‘O’ by = 30 – 20.8 = 9.2 km = 9200 metres

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