7. Consider a two-step, serial, productionprocess with one resource at each step. The processing time at step1 is 10 minutes and the processing time at step 2 is 5 minutes.There is ample supply of raw materials for step 1 and ampledemand.
a) What is the capacity of this process inunits per hour?
b) Suppose there is variability in theprocessing time at step 2. Specifically, the coefficient ofvariation of processing time at step 2 is 2. However, there is novariability in the processing time at step 1. Now what is the totaltime needed for a part to go through step 2?
Hint: Total time includes processing andwaiting. If step 1 is always working and processing time there is 5minutes, how much time passes between units arriving at step 2?
c) Now what is the capacity of this process inunits per hour?
