Question

The ratio of boys to girls in the school is 6: 4. If the total number of students are 120. Find the number of girls in the school.

Answer 1

Let the number of boys be 6x

and the number of girls be 4x.

$6x + 4x = 120 \\ \\ 10x = 120 \\ \\ x = \frac{120}{10} \\ \\ x = 12$

Number of girls in school are :

$4 \times 12 = 48$