If 24 out of our 40 stickers glow in the dark, we would have 16 that don't
As a fraction relative to our total 40 stickers, those 16 would be:
[tex]\frac{16}{40}[/tex]Simplifying,
[tex]\frac{16}{40}\rightarrow\frac{2}{5}[/tex]hereby, 2/5 of the sticketrs don't glow in the dark