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      Question

      A dog saw a rabbit running away from it at 5 m/s and

      immediately started chasing it at 9 m/s. If the rabbit was 80 metres ahead when the dog started chasing, find the time taken by the dog to catch the rabbit.
      A 15 seconds Correct Answer Incorrect Answer
      B 18 seconds Correct Answer Incorrect Answer
      C 20 seconds Correct Answer Incorrect Answer
      D 25 seconds Correct Answer Incorrect Answer

      Solution

      Relative speed of dog w.r.t rabbit = 9 βˆ’ 5 = 4 m/s

      So, required time = 80 Γ· 4 = 20 seconds

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