In a class the ratio of the number of boys to that of the girls is 11 9 30 of the boys and 20 of the...........

Quantitative Aptitude (CHSL) Percentage

In a class, the ratio of the number of boys to that of the girls is 11:9. 30% of the boys and 20% of the girls passed an exam. Find

the percentage of students who passed the exam.

This questions was previously asked in

SSC CHSL 26th May 2022 Shift-2

3.92%

20%

24.5%

25.5%

- In the class, the ratio of boys to girls is 11:9. This means for every 20 students, 11 are boys, and 9 are girls.

- Let’s assume there are "20x" students in total (11x boys and 9x girls).

- 30% of the boys passed the exam, which is 0.30 * 11x = 3.3x boys.

- 20% of the girls passed the exam, which is 0.20 * 9x = 1.8x girls.

- Total students who passed the exam = 3.3x + 1.8x = 5.1x.

- The percentage of students who passed = (5.1x / 20x) * 100 = 25.5%.

Correct Answer: Option 4 – 25.5%

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