The average of 7 numbers is 77. If one number 40 is excluded, find the new average.
- A. 70.12
- B. 87.5
- C. 83.17 ✓
- D. 97.44
Correct answer
C. 83.17
Explanation
Total of 7 numbers = 539. New total = 539 - 40 = 499. New average = 499/6 = 83.17.
C. 83.17
Total of 7 numbers = 539. New total = 539 - 40 = 499. New average = 499/6 = 83.17.