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      Question

      Ratio of the lengths of two trains β€˜X’ and β€˜Y’

      is 5:6 respectively and the ratio of time taken by them to cross a pole is 3:4 respectively. If speed of train β€˜X’ is 100 km/h, then find the speed of train β€˜Y’.
      A 90 km/h Correct Answer Incorrect Answer
      B 100 km/h Correct Answer Incorrect Answer
      C 72 km/h Correct Answer Incorrect Answer
      D 88 km/h Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Speed of Train Y = 100 Γ— (6/4) Γ— (3/5) => 100 Γ— 18/20 = 90 km/h

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