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      Question

      The average of 20 results is 15 and the average of other

      25 results is 24. What is the average of all the results?
      A 40 Correct Answer Incorrect Answer
      B 22 Correct Answer Incorrect Answer
      C 39 Correct Answer Incorrect Answer
      D 20 Correct Answer Incorrect Answer

      Solution

      The correct answer is D

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