Table shows the number of students who appeared in a CET from six schools A to F in 2020 to 2022, with the passed:failed (P:F) ratio.
| School | 2020 Appeared | 2020 P:F | 2021 Appeared | 2021 P:F | 2022 Appeared | 2022 P:F |
|---|---|---|---|---|---|---|
| A | 1292 | 11:8 | 1508 | 7:6 | 1344 | 3:5 |
| B | 1694 | 4:7 | 1690 | 8:5 | 1904 | 9:8 |
| C | 1620 | 8:7 | 1584 | 7:4 | 1274 | 4:3 |
| D | 1752 | 7:5 | 1656 | 11:7 | 1976 | 7:12 |
| E | 1740 | 3:2 | 1452 | 7:4 | 1430 | 8:5 |
| F | 1972 | 17:12 | 1734 | 12:5 | 1848 | 8:13 |
What is the difference between the number of students who passed from School D in 2020 and the number who failed from School B in 2022?
A112
B120
C126 ✓ Correct
D136
Correct answer: (C) 126
Explanation
The difference is 126, so the answer is 126.
School D in 2020 had 1752 students in the ratio 7 to 5 passed to failed.
So the passed students are 7 parts out of 12, which is 1022.
School B in 2022 had 1904 students in the ratio 9 to 8 passed to failed.
So the failed students are 8 parts out of 17, which is 896.
The difference is 1022 minus 896, which is 126.
So the answer is 126.
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