We know that they divided 1/2 of a pound of butter evenly and filled 4 dishes.
So, we can represent the situation if we divide 1/2 by 4
[tex]\frac{\frac{1}{2}\text{ of a pound of butter}}{4\text{ dishes}}[/tex]Then, to know how much butter they put in each dish we must simplify the fraction
Finally, simplifying the fraction we obtain
[tex]\frac{\frac{1}{2}}{\frac{4}{1}}=\frac{1}{4\cdot2}=\frac{1}{8}[/tex]So, they put 1/8 of a pound of butter in each dish.