The ratio of coins to notes in a bag is 3 to 8.
The total number of coins is 24.
Let there be y number of notes in the bag. Then we can write,
[tex]\frac{3}{8}=\frac{24}{y}[/tex]On solving we get,
[tex]\begin{gathered} 3y=24\times8 \\ y=\frac{24\times8}{3}=64 \end{gathered}[/tex]Thus there are 64 notes in the bag.