Answer :
[tex]\frac{1}{2}[/tex]
Explanation
50 % means taht for every 100 you must take 50, in other words 50 % represents a half
so, you can write 50 % as
[tex]50\text{ \%}\rightarrow1\text{ half}\rightarrow\frac{1}{2}[/tex]so, the answer is
[tex]\frac{1}{2}[/tex]