Question

In a school, boys and girls are in the ratio $5:4$.

What is the percentage of boys in the school ?

Answer 1

Step 1.Given ratio of boys and girls in the school is $\mathbf{5}\mathbf{:}\mathbf{4}$

Let the number of boys in the school be $5x$

Let the number of girls in the school be $4x$

So the total number of students in the school$=5x+4x=9x$

Step 2. Finding the percentage of boys in the school

Percentage of boys in the school$=$Number of boys in the school$/$Total number of students

$=\left(\frac{5x}{9x}\times 100\right)\%$

$=55.55\%$

Hence the percentage of boys in the school is $55.55\%$