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      Question

      A bus takes 90 minutes to cover 135 km. If its speed is

      reduced by 15 km/h, find the new time required to cover the same distance.
      A 1 hour and 25 minutes Correct Answer Incorrect Answer
      B 1 hour and 48 minutes Correct Answer Incorrect Answer
      C 2 hour and 18 minutes Correct Answer Incorrect Answer
      D 3 hour and 40 minutes Correct Answer Incorrect Answer

      Solution

      ATQ, Speed of the bus = (135/90) Γ— 60 = 90 km/h New speed of the bus = 90 – 15 = 75 km/h So, required time = (135/75) Γ— 60 = 108 minutes or 1 hour and 48 minutes

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