2013 Gauss 8 Problem 4

Ahmed is going to the store. One quarter of the way to the store, he stops to talk with Kee. He then continues for 12 km and reaches the store. How many kilometres does he travel altogether?

\textbf{(A)}\ 15\quad \textbf{(B)}\ 16\quad \textbf{(C)}\ 24\quad \textbf{(D)}\ 48\quad \textbf{(E)}\ 20

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Full credit to this problem is given to the CEMC, you may view all Gauss contests here.