2003 Fermat Problem 5

During hibernation, a bear loses 20\% of its original mass. After hibernation, its mass is 220\,\text{kg}. What was its mass, in kilograms, just before hibernation?

\textbf{(A)}\ 176\quad \textbf{(B)}\ 264\quad \textbf{(C)}\ 240\quad \textbf{(D)}\ 275\quad \textbf{(E)}\ 1100

If there are no answer choices shown, enter a numerical answer.

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