The average of 6 numbers is 38. When a new number is added, the average becomes 39. Find the new number.
- A. 50
- B. 35
- C. 53
- D. 45 ✓
Correct answer
D. 45
Explanation
Total of 6 numbers = 228. Total of 7 numbers = 273. New number = 273 - 228 = 45.
D. 45
Total of 6 numbers = 228. Total of 7 numbers = 273. New number = 273 - 228 = 45.