Madhya Pradesh Police Exam Model Paper 4

Given:
Ratio of boys and girls = 8 : 11
Total number of students = 399
Calculation:
Let the number of boys and girls be 8x and 11x respectively
Total number of students $=\left(8\mathit{x}+11\mathit{x}\right)$
⇒ 19x
Now, according to question
br> $\Rightarrow 8\mathit{x}=\left(399/19\mathit{x}\right)\times 8\mathit{x}$
$\Rightarrow 168$
∴ The number of boys are 168