Sub City, a popular sandwich shop in Marshalltown, Iowa, offers $3$ types of sandwiches:

Grilled vegetables.

Grilled chicken

Pastrami

Demand $($in sandwiches per hour$)$ are Grilled Vegetables $-25,$ Grilled Chicken $-15,$ and Pastrami $-10.$ There are up to five steps in the process of making sandwiches, listed below with processing times.

Step

Grilled Vegetables

Grilled Chicken

Pastrami

Cut bread

$\mathrm{.}75$ minutes

$\mathrm{.}75$ minutes

$\mathrm{.}75$ minutes

Grill

$1\mathrm{.}4$ minutes

$1\mathrm{.}4$ minutes

$\_\_\_\_$

Slice meat

$\_\_\_\_$

$\_\_\_\_$

$3$ minutes

Toast

$2$ minutes

$2$ minutes

$2$ minutes

Wrap

$\mathrm{.}5$ minutes

$\mathrm{.}5$ minutes

$\mathrm{.}5$ minutes

Only $50$ percent of customers want their sandwich toasted, no matter which sandwich is ordered.

Suppose Sub City employs $1$ worker at each step, and they could not assist the other worker at a station next to them due to cleanliness reasons.

What is the implied utilization of each of the five steps in this process?

From this utilizations, is this a $$demand$-$limited$$ or $$process$-$limited$$ system? How can you tell?

What is the actual and maximum flow rates of the three sandwich types? Explain the differences?

If you were allowed due to system upgrades that workers could assist workers to their left or right$-$ but not cross over workstations$-$ what would be your first step in allowing workers to share at a station? That is$,$ which two stations would you combine to share first? Explain your rationale the the expected effectiveness.