Question

The ratio of girls to boys in a class is 5 ∶ 3. If the total capacity of the class was 48 and 16.67% girls were absent, find the number of girls present.

A. 15

B. 18

C. 5

D. 25

1. B
2. C
3. D
4. A

Answer 1

Correct Answer - Option 3 : D

Given:

Ratio of girls to boys = 5 : 3

Total capacity of class = 48

Percentage of girls absent = 16.67%

Calculation:

Number of girls in the class = [5/(5 + 3)] × 48

⇒ (5/8) × 48

⇒ 30

Now, number of girls present = [1 - (16.67/100)] × 30

⇒ [1 - (1/6)] × 30

⇒ (5/6) × 30

⇒ 25

∴ 25 girls are present in the class.

16.67% = 100/600 = 1/6