2024 Cayley Problem 11

Arturo has an equal number of \$5 bills, of \$10 bills, and of \$20 bills. The total value of these bills is \$700. How many \$5 bills does Arturo have?

\textbf{(A)}\ 16\quad \textbf{(B)}\ 24\quad \textbf{(C)}\ 12\quad \textbf{(D)}\ 20\quad \textbf{(E)}\ 28

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 Cayley contests here.