The average of 8 numbers is 62. When a new number is added, the average becomes 64. Find the new number.
- A. 61
- B. 98
- C. 80 ✓
- D. 64
Correct answer
C. 80
Explanation
Total of 8 numbers = 496. Total of 9 numbers = 576. New number = 576 - 496 = 80.
C. 80
Total of 8 numbers = 496. Total of 9 numbers = 576. New number = 576 - 496 = 80.