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

Q. 1.     There are 20 girls and 15 boys in a class.

             (b) What is the ratio of number of girls to the total number of students in the class?

Answers (1)
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Given,

Number of boys = 15

Number of girls = 20 

Total number of students = 15 + 20 = 35.

the ratio of the number of girls to the total number of students in the class:

=\frac{20}{20+15}=\frac{20}{35}=\frac{4}{7}=4:7

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