A student has 3 total hours available for studying every night. An op's professor assigns her students 10 op's questions every day. After the student "prepares himself" to work on operations, each problem takes 6 minutes to complete. An accounting professor similarly assigns her students 10 questions every day, each of which takes 6 minutes to complete after the student is "prepared" to work on accounting. The student is "prepared" to immediately work on the next op's problem if he just completed an op's problem, and similarly he is "prepared" to immediately work on an accounting problem if the student just completed an accounting problem. Unless he just completed an op's problem, it takes the student 5 minutes to get prepared before tackling an op's problem, and similarly, unless he just completed an accounting problem it takes him 5 minutes to get prepared to tackle an accounting problem. The student proposes doing the problems in batches of five, meaning completing five op's problems followed by five accounting problems followed by five op's problems, followed by five accounting problems. What will be the student's implied utilization?

- more than 100%

- 7/9

- 2/3

-100%