Question

In one class the ratio of boys to girls is 5:6 if in this class it has 10 boys how much girls in this class

Answer 1

12

Explanation:

The 5 parts of the ratio represents 10 boys.

Divide number of boys by 5 to find the value of one part of the ratio.

`(10)/(5)` = 2 ← value of 1 part of the ratio

There are 6 parts of the ratio representing girls, thus

6 × 2 = 12 ← number of girls in the class

Answer 2

12

Explanation:

5 : 6 = Number of boys to girls

(We have to ×2 to get from 5 to 10 so we must ×2 from 6 to 12)

10 : ? = Number of Boys to girls

10 : 12 = Number of Boys to girls