The following table shows the percentage of girls who passed in an examination and the percentage of boys who failed in that exam in a school during the six years from 2018 to 2023. Based on the data in the table, answer the questions that follow.
Year-wise Result details of Students
| Year | Percentage of Girls who passed | Percentage of Boys who failed |
|---|---|---|
| 2018 | 32% | 40% |
| 2019 | 42% | 60% |
| 2020 | 55% | 25% |
| 2021 | 40% | 30% |
| 2022 | 60% | 50% |
| 2023 | 42% | 80% |
If in the year 2020, the total number of boys and the total number of girls who appeared in the exam are 800 and 700 respectively, then what is the ratio of the total number of boys who passed to the total number of girls who failed?
A40 : 21 ✓ Correct
B154 : 201
C18 : 11
D7 : 10
Correct answer: (A) 40 : 21
Explanation
In 2020 boys failed is 25 percent, so boys passed is 75 percent of 800 which is 600. Girls passed is 55 percent, so girls failed is 45 percent of 700 which is 315. The ratio 600 to 315 reduces to 40 to 21.
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