Hey there!☺
[tex]Answer:\boxed{9.99}[/tex]
[tex]Explanation:[/tex]
If you want to find 2 times what will give you 19.98, you should divide it by 2.
[tex]19.98/2=9.99[/tex]
Now let's try multiplying 2 by 9.99 to see if we get 19.98.
[tex]2*9.99=19.98[/tex]
[tex]9.99[/tex] is your answer.
Hope this helps!