The average of 10 numbers is 70. When a new number is added, the average becomes 74. Find the new number.
- A. 114 ✓
- B. 140
- C. 125
- D. 97
Correct answer
A. 114
Explanation
Total of 10 numbers = 700. Total of 11 numbers = 814. New number = 814 - 700 = 114.