Question

3/8 of the children are girlsThe rest boysIf there are 30 girlsHow many boys

Answer 1

Given:

3/8 of the children are girls.

The rest boys.

There are 30 girls.

Required:

To find the number of boys.

Explanation:

Let x be the total number of children.

3/8 part of the x are girls.

So

$\frac{3}{8}\times x$

It is given that tere are 30 girls so,

$\begin{gathered} \frac{3}{8}x=30 \\ \\ 3x=240 \\ \\ x=\frac{240}{3} \\ \\ x=80 \end{gathered}$

Now the number of boys is

$\begin{gathered} =x-30 \\ \\ =80-30 \\ \\ =50 \end{gathered}$

Final Answer:

There are 50 boys.