Question

A class has 28students. The ratio of girls to boys is 4:3. How many girls are in the class?

Answer 1

There are 4+3=7 parts in total
4x7=28
16 are girls and the balance is 12 boys

Answer 2

In a class of 28 students the ratio of girls and boys is 4:3. The number of girls in the class is 16.

Solution:

Let us consider total number of students in the class is “T”.

Let the ratio of the students (Girl and boys) in the class is G: B.

Given that total number of students in class (T) = 28

From question, given that ratio of girls and boys is 4:3. We can write this ratio as,

Number of girls (G) = 4x and number of boys (B) = 3x

We have to find the number of girls in class. The total number of girls present in the class is given as ,

`G = T * (G)/(G + B)`

The total girl students present in the class G =
`28 * (4 x)/(4 x + 3 x) = 28 * (4 x)/(7 x)`

=
`28 * (4)/(7) = 4 * 4 = 16`

Hence the total number of girls in the class is 16.