Multiple Parallel Processing System

Two workers at $\text{'}$A$\text{'}$ process jobs simultaneously. Finished jobs then move to the first available spot at station B$,$ where four workers are processing items simultaneously. Finally, each job moves to station C$,$ where one person finishes the work required. All jobs require that a worker spend time "changing over" before processing the next incoming job. Assume that every incoming job contains five items $($i$.$e$.,N=5).$

Station B

Station A

$\frac{R}{T}=110s\frac{ec}{\text{i}\text{t}\text{e}\text{m}}$

$\frac{C}{O}=90s\frac{ec}{\text{j}\text{o}\text{b}}$

Station C

$\frac{R}{T}=15s\frac{ec}{\text{i}\text{t}\text{e}\text{m}}$

$\frac{C}{O}=60s\frac{ec}{\text{j}\text{o}\text{b}}$

$\frac{R}{T}=110s\frac{ec}{\text{i}\text{t}\text{e}\text{m}}$

$\frac{C}{O}=90s\frac{ec}{\text{j}\text{o}\text{b}}$