Sammy's aunt made a third of a pound of fudge.
Mathematically,
[tex]\frac{1}{3}[/tex]Her uncle bought 1/4 of a pound of fudge
[tex]\frac{1}{4}[/tex]How much more fudge did her aunt make?
Simply subtract the amount of fudge that her uncle bought from the amount of fudge that her ant made.
[tex]\frac{1}{3}-\frac{1}{4}=\frac{4(1)-3(1)}{12}=\frac{4-3}{12}=\frac{1}{12}[/tex]Therefore, her aunt made 1/12 of a pound more fudge than her uncle.