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Dave is analyzing the processes at the shop. Assuming a separate person works at each step in the process, please answer the following question. $($Show all calculations$)$

a$)$ What is the throughput time?

b$)$ What is the maximum output of the system in $6$ hours?

c$)$ What is the efficiency of step $5?$

d$)$ What will happen to the system's capacity if we add another person to step $3$ of the process? Explain.