Marks scored by a student in different subjects are given in the table below
| Subjects | Marks obtained out of 100 |
| English | 55 |
| Hindi | 90 |
| Mathematics | 75 |
| Science | 80 |
| Foreign language | 90 |
Five marks are to be deducted from each subject due to shortage of attendance. The net average of the mean, median and mode of the marks obtained is ____.
1
79.33
2
77.67
3
82.66
4
73