Question

In a class of 20 students, the ratio of number

boys to the number of girl is 2 : 3, then the

number of boys in the class is?​

Answer 1

Answer :-

• Number of boys = 8

Given :-

• Total number of students in class = 20

• Ratio of boys to girls = 2 : 3

To Find :-

• The number of boys in the class.

Step By Step Explanation :-

As we know that the total number of students in the class = 20. Ratio of boys to girls = 2 : 3

We need to calculate the number of boys in the class.

Let us consider ➡ boys = 2x and girls = 3x

So equation will be ⤵

$\dag\boxed{ \bf{2x + 3x = 20}}$

So, let's solve the equation !!

$\implies \sf2x + 3x = 20 \\ \\\implies \sf 5x = 20 \\ \\\implies \sf x = \cancel \cfrac{20}{5} \\ \\ \implies \sf \: x = 4$

x = 4

Now number of boys = 2x => 4 × 2 => 8

and number of girls = 3x => 3 × 4 => 12

Number of boys = 8

Number of girls = 12

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