Question: Consider the following four-step assembly operation with quality problems. All resources are staffed by one employee. The first resource has a processing time of 5 minutes per unit. The second resource has a processing time of 6 minutes per unit. The third resource has a processing time of 3 minutes per unit. With a 30 percent probability the flow unit coming out of the third resources has to he reworked. In that case the operation at the first, second and third resources are repeated. You can assume that rework always succeeds and the processing times for units in rework are the same for the regular units. The fourth resource has a processing time of 4 minutes per unit. What in the process is the bottleneck? What is the capacity of the process?