The average of 8 numbers is 66. If one number 11 is excluded, find the new average.
- A. 78.89
- B. 77.87
- C. 73.86 ✓
- D. 64.43
Correct answer
C. 73.86
Explanation
Total of 8 numbers = 528. New total = 528 - 11 = 517. New average = 517/7 = 73.86.
C. 73.86
Total of 8 numbers = 528. New total = 528 - 11 = 517. New average = 517/7 = 73.86.