The following table shows the marks of the 20 students of a class in Mathematics. Then the average mark of these 20 students is
| Marks | 80 | 85 | 90 | 95 | 100 |
| No. of students | 2 | 4 | 7 | 4 | 3 |
1
89.5
2
90
3
90.5
4
91
The following table shows the marks of the 20 students of a class in Mathematics. Then the average mark of these 20 students is
| Marks | 80 | 85 | 90 | 95 | 100 |
| No. of students | 2 | 4 | 7 | 4 | 3 |