X=5
Because 8/16=x/10 8 is half of 16 so it is equal to the same amount as 5/10
You can simplify them both down to one fraction 1/2
Hope that I could help you
[tex]\displaystyle\\\frac{8}{16} =\frac{x}{10}\\\\x=\frac{10\times8}{16}= \frac{80}{16} =\boxed{5}[/tex]
