In a math class, tests are 50% of your grade, homework is 30% of your grade, test reviews are 5% of your grade, and the final exam is 15% of your grade. At the end of the semester, your test average is 56, your homework average is 90, and your review average is 74. What score do you need on the final exam to get a C (72%) in the class? (Round your answer to 2 decimal places.)