Question

In a school,

Answer 1

Answer:

$\frac{2}{3}$

Step-by-step explanation:

If you have the numbers $a$ and $b$, the ratio of number $a$ to number $b$ is $a:b$ or $\frac{a}{b}$.

If $\frac{2}{5}$ of the students who study a language studies French, then the rest of them, $\frac{3}{5}$, doesn't study French. The ratio of the students who study French to the students who don't study French should be $\frac{2}{5} : \frac{3}{5}$.

$\frac{2}{5} : \frac{3}{5} \\ \frac{\frac{2}{5}}{\frac{3}{5}} \\ \frac{2}{5} \cdot \frac{5}{3} \\ \frac{10}{15} \\ \frac{2}{3}$