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The average of five numbers is 6.9. If one of the numbers is deleted, the average of the remaining numbers is 4.4. What is the value of the number deleted?
  1. 6.8
  2. 7.4
  3. 12.5
  4. 16.9
Explanation
  • Total of 5 numbers: 5x 6.9 = 34.5
  • Total of 4 numbers:4×4.4=17.6
  • Deleted number: 34.5 - 17.6 = 16.9

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