Question

Of the 72 students in class , 28 are boys and the remaining are girls . Find the ratio of:.

(A) Boys to that of girls.

(B) Girls to the total number of students.

(C) Total number of students to the boys.​

Answer 1

Answer:

(a): 28:72

(b): 72--28=44

therefore total no.of girls=44

(c): 28:72

Answer 2

Given:

We have given that there are 72 students in school in which 28 are boys.

To Find:

We have to find the ratio of different quantities?

Step-by-step explanation:

• Total number of students in class=72
• Number of boys in school=28
• Number of girls=72-28=44
• A) Ratio of number of boys to that of number of girls is given by

        $boy:girl=\frac{28}{44}$

• We can further simply the above numerator and denominator terms by dividing them by common number we get

        $bot:girl=\frac{7}{11}$

Hence, the ratio to the boy and girl is 7:11.

• B) Ratio of number of girls to that of total number of students  is given by

        $girl:\textrm{total number of student}=\frac{44}{72}$

• We can further simply the above numerator and denominator terms by dividing them by the common number we get

       $girl:\textrm{total number of student}=\frac{11}{18}$

Hence, the ratio to the  girl and total number of students is 11:18

• C) Ratio of the total number of students to that of number of boys  is given by

         $\textrm{total number of student}:boys=\frac{72}{28}$

• We can further simply the above numerator and denominator terms by dividing them by the common number we get

        $\textrm{total number of student}:boys=\frac{18}{7}$

Hence, the ratio of the total number of students to a number of boys is 18:7