Question

The ratio of boys to girls in the Grade 3 classes at Domino Primary school

is 3:4. If there are 12 boys in one class, how many learners are in the class? (2)​

Answer 1

28 learners

Explanation:

Boys : Girls

3 : 4

Since there are 12 boys and 3 units of them...

3 units = 12

1 unit = 12 ÷ 3 = 4

Girls =

4 units = 4 x 4 = 16

Total number of girls and boys: 12 + 16 = 28