Figure $5\mathrm{.}1$

The figure above shows the process for paying tuition at a major university. Students receive their bill, for the next term, for review. They are directed to different tables for clarifications, before being asked to pay their tuition at E$.$ The numbers in parentheses are the time in minutes for each step of the process.

Use the information in Figure $5\mathrm{.}1.$ If $60\%$ of the students are routed to C and $40\%$ are routed to D$,$ what is the average capacity per hour for the process?

Group of answer choices

$8\mathrm{.}4$ students per hour

$8$ students per hour

$10$ students per hour

$6\mathrm{.}5$ student per hour