The average of 6 numbers is 42. When a new number is added, the average becomes 45. Find the new number.
- A. 63 ✓
- B. 76
- C. 71
- D. 50
Correct answer
A. 63
Explanation
Total of 6 numbers = 252. Total of 7 numbers = 315. New number = 315 - 252 = 63.
A. 63
Total of 6 numbers = 252. Total of 7 numbers = 315. New number = 315 - 252 = 63.