Question

In a class of $48$ students, the number of girl is three-fifth the number of boys. The number of boys is

• A. $25$
• B. $30$
• C. $35$
• D. $48$

Answer 1

Answer: (A)

$25$

Let the number of boys be $x$.

number of girls$=\frac{3}{5}x$

Total$=48$

So,

We have,

$\begin{array}{c}x+\frac{3}{5}x=48\\ \frac{5x+3x}{5}=48\\ 8x=48\times 5\\ x=\frac{48\times 5}{8}\end{array}$

$x=30$

Then,

We get the number of boys is $30$.