Section : Quantitative Aptitude
The given table represents the percentage marks of three students in three subjects. Study the table and answer the question.
| Student | Subject | ||
| Geography | History | Economics | |
| Rohan | 78 | 77 | 74 |
| Sohan | 84 | 80 | 82 |
| Mohan | 87 | 83 | 86 |
The average marks obtain by Sohan in all three subject is equal to: