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      Question

      The mean and median for a given set of data points are

      15 and 25, respectively. If each data point is multiplied by a constant k and the new mean becomes 135, what is the value of k?
      A 10 Correct Answer Incorrect Answer
      B 9 Correct Answer Incorrect Answer
      C 8 Correct Answer Incorrect Answer
      D 12 Correct Answer Incorrect Answer

      Solution

      ATQ, 15k = 135 k = 135 ÷ 15 = 9

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