There are 45 learners in grade 9A the ratio of girls 2:1 How many boys are in the class

Answer 1

The ratio of girls to boys is 2:1, which means that for every 2 girls, there is 1 boy.

If there are 45 learners in total and the ratio of girls to boys is 2:1, we can set up the equation as follows:

2x + x = 45
3x = 45
x = 15

So there are 15 boys in the class.

Answer 2

Explain the answer

Answer 3

In a class of 45 students, the ratio of girls to boys is 2:1. This means that for every 2 girls, there is 1 boy.

To find the number of boys in the class, we need to divide the total number of students by the total parts in the ratio (2+1 = 3).

45 / 3 = 15

This means that each "part" in the ratio represents 15 students. Since the ratio is 2:1, there are 2 parts for girls and 1 part for boys.

So, 2 parts for girls = 2 * 15 = 30 girls
1 part for boys = 1 * 15 = 15 boys

Therefore, there are 15 boys in the class.