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?

**(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?