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    Question

    Arjun left a bus stop at 14 m/s. Mohan started chasing

    him 7 seconds later and overtook him in 28 seconds. What speed was Mohan running at?
    A 12 m/s Correct Answer Incorrect Answer
    B 10 m/s Correct Answer Incorrect Answer
    C 11 m/s Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Distance covered by Arjun in 7 seconds = 14 × 7 = 98 metres

    Relative speed between Mohan and Arjun = 98 ÷ 28 = 3.5 m/s

    Mohan must be faster.

    So, Mohan’s speed = 14 + 3.5 = 17.5 m/s

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