Question

out of 30 students in a class 12 are girls.find the ratio
1.no of girls to boys.
2.no of girls to total no of students.
3.no of boys to total no of students.

Answer 1

Answer:

If number of girls is 12 then the number of boys is 30-12 = 18.

1.12:18=6:9=2:3

2.12:30=6:15=2:5

3.18:30=9:15=3:5

Step-by-step explanation:

Answer 2

Answer:

1. 2:3

2. 2:5

3. 3:5

Step-by-step explanation:

Because if there are 12 girls then there are 18 boys and if you simplify both numbers you get 2 to 3 and do the same with all of the students and you get 2 to 5 and finally boys to all students and then you get 3 to 5