Panini, a popular sandwich shop offers 3 types of sandwiches (Grilled Vegetable,

Question

Panini, a popular sandwich shop offers 3 types of sandwiches (Grilled Vegetable, Grilled Chicken, and Pastrami). The below info provides demand data for each sandwich per hour:

GV: 10; GC: 15; and Pastrami: 25

There are up to 5 steps in the process of making sandwiches, listed below with activity times. Only 50% of customers want thier sanwich toasted, no matter which sandwich is ordered.

Suppose Panini employs 1 worker at each step. What is the highest implied utilization of this process? (HINT: find the work load per hour of each activity. Then find the implied utilization of each activity per hour.)

Step GV GC Pastrami Cut Bread .75 min .75 min .75 min Grill 1.4 min 1.4 min - Slice Meat - - 3 min Toast 2 min 2 min 2 min Wrap .5 min .5 min .5 min

Explanation / Answer

Time utilized in Cut bread step = 10 x 0.75 + 15 x 0.75 + 25 x 0.75

= 0.75 x 50

=37.50 minutes

Time utilized in Grill step = 10 x 1.4 + 15 x 1.4

= 1.4 x 25

= 35 minutes

Time utilized in Slice meat step = 25 x 3 = 75 minutes

Time utilized in Toast step = 10 x 2 + 15 x2 + 25 x 2

= 2 x 50

= 100 minutes

BUt only 50% gets the sandwich toasted so utilization = 50 minutes

Time utilized in Toast step = 10 x 0.5 + 15 x0.5 + 25 x 0.5

=0.5 x 50

= 25 minutes

Thus highest implied utilization of this process is on the slice meat step

and is equal to 75/60 = 1.25 or 125 %

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