Question

there are 20 girls and 15 boys in a class.
(a)what is the ratio of number of girls to the number of boys ?
(b)what is the ratio of number of girls to the total number of students in the class ?​

Answer 1

Answer:

a-4:3. b-4:7

Step-by-step explanation:

a-

no. of girls/no. of boys

20/15

4/3

4:3

b-

no of student in class =20+15

=35

no of girls/no of student in class

20/35

4/7

4:7

Answer 2

Given:

Number of girls = 20

Number of boys = 15

Total number of students = 20 + 15 = 35

Solution:

(a) Ratio of number of girls to number of boys = 20 / 15 = 4 / 3

(b) Ratio of number of girls to total number of students = 20 / 35 = 4 / 7