At a local business school, there is a toasted submarine sandwich process that uses a conveyor-fed oven. ( See picture below) Alice is the sole operator of the sub making process. In the first step of the process, she spends 2 minutes putting various ingredients in the sub. Then, she puts the sub on a conveyor belt and, over a period of 12 minutes, the conveyor moves the sub from the beginning of the oven to the end of the oven, fully toasting it. After the sub comes out of the oven, Alice spends 1 minute slicing the sandwich and putting it in a box. At most, 5 subs can fit in the oven at once. The toasting time in the oven does not depend on the number of subs in the oven. Required:
a. Draw a process-flow chart for the sandwich-making process.
b. Calculate the hourly capacity of this sandwich-making process.
c. Suppose another employee is hired to do the slicing and boxing, and Zeynep now only loads the sandwiches with the right ingredients. What is the hourly capacity of this process with the additional employee?