There are 20 girls and 15 boys in a class.
(a) What is the ratio of number of girls to the number of boys?
(b) What is the ratio of number of girls to the total number of students in the class?

Given:

There are 20 girls and 15 boys in a class.

To do:

We have to find:

(a) The ratio of the number of girls to the number of boys.

(b) The ratio of number of girls to the total number of students in the class.

Solution:

Number of girls in the class$ =20$

Number of boys in the class$ =15$

Therefore,

The total number of students in the class$ =20+15$

$=35$

(a) The ratio of the number of girls to the number of boys $ =\frac{20}{15}$

$=\frac{4}{3}$

The ratio of the number of girls to the number of boys is $4:3$.

(b) The ratio of the number of girls to the total number of students in the class $ =\frac{20}{35}$

$=\frac{4}{7}$

The ratio of the number of girls to the total number of students in the class is $4:7$.

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Updated on: 10-Oct-2022

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