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If the average of 6 numbers is 12, and one more number 20 is added, what is the new average?
  1. 12
  2. 13.14
  3. 14
  4. 15
Explanation

  1. Average of 6 numbers = 12

  1. Add the new number 20:

  1. Total numbers now = 6 + 1 = 7

  2. New average = Total ÷ Number of values

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