Bottleneck Analysis with Scrap Consider the following four-step assembly operation with quality problems. Resource 1 has a processing time of 5 minutes per unit and one worker doing the operation. Resource 2 has a processing time of 4 minutes per unit. It also has one worker doing the operation. However, this is a very delicate operation and 80% of all products have to be scrapped after this step. Resource 3 is staffed with two workers. No quality problems occur at this resource and the processing time is 20 minutes per unit. Resource 4 is handled by one worker. No quality problems exist at this step and the processing time is 12 minutes per unit. 1. For every unit of demand, how many units have to flow through Resource 1 in the process? 2. Where in the process is the bottleneck? (Hint: Assume demand for the final product is D, calculate the expected number of units needed from each resource, then calculate the implied utilization for each resource, and decide which one is the bottleneck.)