Question

There are $b$ boys and $g$ girls in a class. The ratio of the number of boys to the total number of students in the class is

Answer 1

Finding The ratio of the number of boys to the total number of students in the class:

Number of boys in a class $=b$

Number of girls in a class $=g$

Therefore, Total number of students in a class $=b+g$

Therefore, the ratio of number of boys to the total number of students

$$\begin{gathered} =\frac{\mathrm{Number}\mathrm{of}\mathrm{boys}\mathrm{in}\mathrm{the}\mathrm{class}}{\mathrm{Total}\mathrm{number}\mathrm{of}\mathrm{students}\mathrm{in}\mathrm{the}\mathrm{class}} \\ =\frac{b}{b+g} \\ =b:b+g \end{gathered}$$

Hence, The ratio of the number of boys to the total number of students in the class is $b:b+g$.