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?
- 6.8
- 7.4
- 12.5
- 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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