The given table represents the percentage marks of three students in three subjects. Study the table and answer the question.
| subject/Student | Geography | History | Economics |
| Rohan | 78 | 77 | 74 |
| Sohan | 84 | 80 | 82 |
| Mohan | 87 | 83 | 86 |
The average marks (to the nearest integer) obtained by the students in History and Economics (respectively) are:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 80 and 81.
Sum the History Marks = 77 (Rohan) + 80 (Sohan) + 83 (Mohan) = 240
Average = 240/3 = 80
Sum the Economics Marks = 74 (Rohan) + 82 (Sohan) + 86 (Mohan) = 242
Average = 242/3 = 80.666... = 81 (approx)
The average marks obtained by the students in History and Economics are 80 and 81.