Question

In a class of 30 students, the number of boys is two- third of the number of girls.Find the number of boys in the class.

Answer 1

Step-by-step explanation:

no. of boys =12

no. of girls =18

Answer 2

In context to question asked,

We have to determine the number of boys in the class.

As per data,

It is given that,

There are total 30 students in the class.

Number of boys in the class is two third of the girls.

So, the the number of girls = x

So, number of boys will be $=\frac{2}{3}\times x = \frac{2x}{3}$

So, from above,

$x+\frac{2x}{3} = 30\\=>\frac{3x+2x}{3}= 30\\=>\frac{5x}{3} = 30\\=>5x = 30 \times 3\\=>x = \frac{30 \times 3}{5} = 18$

Hence, number of girls will be 18.

So, number of boys will be $=\frac{2x}{3} = \frac{2\times 18}{3} = \frac{36}{3} = 12$