\documentclass[../main.tex]{subfiles}

\begin{document}

	\problem{The Courageous Garrison}

	A courageous garrison was defending a snow fort. The commander arranged his forces as shown in the square frame (the inner square showing the garrison's total strength of 40 boys): 11 boys defending each side of the fort.

	\begin{figure}[h]
		\centering
		\includegraphics[width=12cm]{101a}
	\end{figure}

	The garrison ``lost'' 4 boys during each of the first, second, third, and fourth assaults and 2 during the fifth and last. But after each charge 11 boys defended each side of the snow fort. How?

	\vfill

	\begin{figure}[h]
		\centering
		\includegraphics[width=4cm]{101b}
	\end{figure}

\end{document}