The average of 12 numbers is 39. If the number 52 is also included, then what will be the average of these 13 numbers?
40
Total of 12 numbers = 12 × 39 = 468
Add 52 → New total = 468 + 52 = 520
Average = 520 ÷ 13 = 40
| Marks obtained | No. of students |
| 25 | 5 |
| 30 | 6 |
| 35 | 3 |
| 40 | 1 |
The average runs scored by a batsman in 23 matches is 40. In the next 10 matches, the batsman scored an average of 16 runs. Find his average runs scored (rounded off to two decimals) in all the 33 matches.