Question $4$

Use the information in table below. The figure 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. If $30\%$ of the students are routed to $B$ and $70\%$ are routed

to $C,$ what is the average capacity per hour for the process?

$10$ students per hour

$9\mathrm{.}5$ student per hour

$7$ students per hour

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