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Panini, a popular sandwich shop, offers 3 types of sandwiches: Grill vegetables,

ID: 376343 • Letter: P

Question

Panini, a popular sandwich shop, offers 3 types of sandwiches: Grill vegetables, grilled chicken and pastrami. The table below provides demand data:

Grilled Vegetables

Grilled Chicken

Pastrami

Demand per hour

25

25

10

There are up to five steps in the process of making sandwiches, listed below with activity times. Only 50% of customers want their sandwich toasted, no matter which sandwich is ordered.

Step

Grilled Vegetables

Grilled Chicken

Pastrami

Cut bread

.75 minutes

.75 minutes

.75 minutes

Grill

1.9 minutes

1.9 minutes

-

Slice meat

-

-

3 minutes

Toast

2 minutes

2 minutes

2 minutes

Wrap

.75 minutes

.75 minutes

.75 minutes

Suppose Panini employs 1 worker at each step. What is the implied utilization of the bottleneck of this process?

Please include the explanation.

Grilled Vegetables

Grilled Chicken

Pastrami

Demand per hour

25

25

10

Explanation / Answer


Evaluate workload per hour on each step: Cut = 0.75 x 50 = 37.5; Grill= 1.4 x 40 = 56; Slice = 3 x 10 = 30; Toast = 2 x 0.5 x 50 = 50; Wrap = 0.75 x 50=37.5 . Implied utilizations are then 37.5/60, 56/60, 30/60, 50/60 and 37.5/60. The largest one is 56/60 = 0.933)