Question

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

• A. $40$
• B. $41$
• C. $42$
• D. $43$

Answer 1

The correct option is C $42$

Number of girls in the class $=18$

Ratio of boys and girls $=4:3$

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

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

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

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