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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 – 10 = 8 m/s Required time = (1500 ÷ 8) = 187.5 seconds

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