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    Question

    A spy is 1.8 km ahead of an agent who begins to chase him.

    The agent runs at a speed of 12 m/s, while the spy runs at 8 m/s. How much time will the agent take to catch the spy?
    A 7.5 mins Correct Answer Incorrect Answer
    B 12 mins Correct Answer Incorrect Answer
    C 10.5 mins Correct Answer Incorrect Answer
    D 15 mins Correct Answer Incorrect Answer

    Solution

    ATQ,

    Relative speed = 12 – 8 = 4 m/s

    Distance = 1.8 × 1000 = 1800 metres

    Required time = (1800 / 4) = 450 seconds = (450 / 60) = 7.5 minutes

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