Question

In a class of 9 boys and 12 girls, the ratio of the number of girls to the number of students in the class is *​

Answer 1

Answer :-

• The required ratio is 4 : 7.

Given :-

• A class has 9 boys and 12 girls.

To find :-

• The ratio of the number of girls to the number of students in the class.

Step-by-step explanation :-

• Before finding the ratio, let's find the total number of students in the class.

Here,

• Number of boys = 9.
• Number of girls = 12.

Hence,

• Total number of students = 9 + 12 = 21.

Now we have :-

• Number of girls = 12.
• Total number of students = 21.

Therefore, ratio of the number of girls to the number of students in the class is :-

$\sf12 :21.$

Converting the ratio into fraction,

$\sf \dfrac{12}{21}$

Reducing the fraction into it's simplest form,

$\sf \dfrac{4}{7}$

Converting the fraction into ratio,

$\sf 4 : 7$

• Hence, the ratio of the number of girls to the number of students in the class is 4 : 7.