Consider the following three-station production line with a single product that must visit stations 1, 2, and 3 in sequence:

-Station 1 has 5 identical machines with average processing times of 15 minutes per job.

-Station 2 has 12 identical machines with average processing times of 30 minutes per job.

-Station 3 has 1 machine with average processing time of 3 minutes per job.

1) What is the bottleneck rate (r_b) in units per hour?

2) What is the raw process time (T_0) in HOURS?

3) Compute the average cycle time when the WIP level is set at 20 jobs, under the assumption of the best case performance. answer in hours.