2012 AMC 8 Problem 4

Peter's family ordered a 12-slice pizza for dinner. Peter ate one slice and shared another slice equally with his brother Paul. What fraction of the pizza did Peter eat?

\textbf{(A)}\ \frac{1}{24}\qquad\textbf{(B)}\ \frac{1}{12}\qquad\textbf{(C)}\ \frac{1}{8}\qquad\textbf{(D)}\ \frac{1}{6}\qquad\textbf{(E)}\ \frac{1}{4}

Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.