Foreword
Your image appears to be that of the aftermath of a supernova explosion.
Content
Ratios such as x apples to y apples can be written in fraction form as x/y. Usually ratios compare non-like objects like apples and oranges.
Anyways, we can write 24 messages:10 messages as:
[tex] \frac{24}{10} [/tex]
It can thus be simplified. Note, however, that we cannot write this in mixed fraction form because it is a ratio; it must stay in improper form.
[tex] \frac{24}{10} = \frac{12}{5}[/tex]