2008 Cayley Problem 10

Vivian's cell phone bill includes the graph showing her cell phone use for the month. She is charged

- \$20 per month, plus - 10¢ per minute for daytime calls, plus - 5¢ per minute for evening calls after the first 200 evening minutes. (The first 200 evening minutes are free.)

What is her total cell phone bill for the month shown?

\textbf{(A)}\ \$25\quad \textbf{(B)}\ \$40\quad \textbf{(C)}\ \$45\quad \textbf{(D)}\ \$70\quad \textbf{(E)}\ \$75

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.