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      Question

      The average of n numbers is 66. If each of 54% of

      the numbers is increased by 13 and each of the remaining numbers is decreased by 12, then the new average of the numbers will be
      A 68 Correct Answer Incorrect Answer
      B 62.3 Correct Answer Incorrect Answer
      C 67.5 Correct Answer Incorrect Answer
      D 63.4 Correct Answer Incorrect Answer
      E Cannot be determined Correct Answer Incorrect Answer

      Solution

      Avg. = 66 + ((54 x 13 - 46 x 12)/100) = 66 + 1.5 = 67.5

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