Question

The ratio of number of boys and girls is 4 : 3. If there are 18 girls in a class, find the number of boys in the class and the total number of students in the class.

• A. Propotional
• B. 47
• C. 52
• D. 38

Answer 1

The correct option is A

Propotional

Number of girls in the class = 18

Ratio of boys and girls = 4 : 3

According to the question,

$\frac{Boys}{Girls}=\frac{4}{5}$

$\frac{Boys}{18}=\frac{4}{5}$

$Boys=\frac{(4\times 18)}{3}=24$

Therefore, total number of students = 24 + 18 = 42.