There are 20 girls and 15 boys in a class.
What is the ratio of girls to that total number of students in the class?
Given, number of girls = 20
Number of boys = 15
Total number of students = Girls + Boys = 15 + 20 = 35
The ratio of number of girls to total students
= Number of girlsTotal number of students
= 2020+15=2035=47=4:7