The average of 6 numbers is 69. When a new number is added, the average becomes 70. Find the new number.
- A. 85
- B. 62
- C. 60
- D. 76 ✓
Correct answer
D. 76
Explanation
Total of 6 numbers = 414. Total of 7 numbers = 490. New number = 490 - 414 = 76.
D. 76
Total of 6 numbers = 414. Total of 7 numbers = 490. New number = 490 - 414 = 76.