There are 20 girls and 15 boys in a class. (a) What is the ratio of number of girls to the number of boys?
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 girls to the total number of students in the class?
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2 Answers
(a) The ratio of girls to that of boys = 20/15 = 4/3 = 4:3
(b) The ratio of girls to total students = 20/20+15 = 20/35 = 4/7 = 4:7
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Numbers of girls in a class = 20
Numbers of boys in a class = 15
Total numbers of students in a class = 20 + 15 = 35
(a) Ratio of number of girls to number of boys
= 20/15 = 4/3 = 4 : 3
(b) Ratio of numbers of girls to total number of students
= 20/35 = 4/7 = 4 : 7
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