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      Question

      P' travelled from Delhi to Agra, covering a total distance

      of 396 km. For the initial three hours, he maintained an average speed of ‘a’ km/h. After that, he increased his speed by 20% and continued at this new speed for the remaining journey. If the total travel time was six hours, determine the value of ‘a’.
      A 88 Correct Answer Incorrect Answer
      B 84 Correct Answer Incorrect Answer
      C 55 Correct Answer Incorrect Answer
      D 60 Correct Answer Incorrect Answer

      Solution

      ATQ;
      {(3 × a) + (3 × 1.2a)} = 396
      Or, 6.6a = 396
      So, a = 60
      Therefore, value of ‘a’ = 60

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