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    Question

    A dog is 1,500 metres ahead of a man when the man

    starts chasing by running at 18 m/s. If the dog is running at 10 m/s, then find the time taken by the man to catch the dog.
    A 187.5 secs Correct Answer Incorrect Answer
    B 122.5 secs Correct Answer Incorrect Answer
    C 145.8 secs Correct Answer Incorrect Answer
    D 120.5 secs Correct Answer Incorrect Answer

    Solution

    ATQ, Relative speed of the man = 18 тАУ 10 = 8 m/s Required time = (1500 ├╖ 8) = 187.5 seconds

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