pls help it’s not making sense to me

Answer:
4 : 11
(The 4 is the people that study French)
(The 11 is the people that don't study French. This includes the people that aren't studying a language at all)
Step-by-step explanation:
[tex]\frac{2}{5}[/tex] of the [tex]\frac{2}{3}[/tex] that study a language, is studying French.
[tex]\frac{2}{5}[/tex]*[tex]\frac{2}{3}[/tex]=[tex]\frac{4}{15}[/tex] so [tex]\frac{4}{15}[/tex] of the entire school studies French. that means [tex]\frac{11}{15}[/tex] of the school doesn't study French. In a ratio, it'd be 4 : 11 ratio