The following table shows the marks of a student in 5 tests in the subjects Maths, Physics, and Chemistry (out of 100 for each subject). Study the table and answer the question that follows.
| Tests | Maths | Physics | Chemistry |
| 1 | 80 | 69 | 91 |
| 2 | 94 | 79 | 85 |
| 3 | 88 | 81 | 95 |
| 4 | 92 | 76 | 90 |
| 5 | 96 | 90 | 84 |
The ratio of the average marks obtained by the student in test 2 to the average marks he got in Maths in all tests, is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 43 : 45.
According to the given table,
Total marks obtained by student in test 2 = 94 + 79 + 85
⇒ 258
Average marks in test 2 = 258/3 = 86
Total marks obtained by student in maths = 80 + 94 + 88 + 92 + 96
⇒ 450
Average marks in maths = 450/5 = 90
Required ratio = 90 : 86
⇒ 45 : 43
Hence the ratio of the average marks obtained by the student in test 2 to the average marks he got in Maths in all tests, is 45 : 43.