Question

In a class, there are $25$ boys and $20$ girls. Find the ratio in the simplest form of total students to boys.

Answer 1

Number of boys = $25$
Number of girls = $20$
Total Students = no. of boys + no. of girls
$$\begin{gathered} =25+20 \\ =45 \end{gathered}$$

The ratio of total students to no. of boys = $\frac{45}{25}=\frac{5\times 9}{5\times 5}=\frac{9}{5}$
$9\mathrm{and}5$ have no common factors other than $1$
So, The simplest form of this ratio is $9:5$.