SOLUTION
Given that a baker baked 20 cookies with 4 scoops of flour;
[tex]One\text{ scoop of flour will bake }\frac{20}{4}=5\text{ }cookies[/tex]A baker baked 20 cookies with 4 scoops of flour will bake;
[tex]5\times5=25\text{ cookies}[/tex]The answer is 25 cookies.