The average of 6 numbers is 72. When a new number is added, the average becomes 73. Find the new number.
- A. 79 ✓
- B. 70
- C. 73
- D. 63
Correct answer
A. 79
Explanation
Total of 6 numbers = 432. Total of 7 numbers = 511. New number = 511 - 432 = 79.
A. 79
Total of 6 numbers = 432. Total of 7 numbers = 511. New number = 511 - 432 = 79.