Panbo Inc. is a fast food restaurant which offers 4 main types of sandwiches: Pa
ID: 431875 • Letter: P
Question
Panbo Inc. is a fast food restaurant which offers 4 main types of sandwiches: Pando – classic (C), Pando – premium (P), Pando – exotic (E), and Pando – ultimate (U). Every day, the restaurant operates for 10 hours and it is expecting to sell 500 sandwiches. And from the past data, 30% of the demand is for C, 20% is for P, 45% is for E, and 5% is for U. There are up to five steps in the process of making sandwiches, listed below with activity times. 70% of customers want their sandwich toasted, no matter which sandwich is ordered.
Step
Classic
Premium
Exotic
Ultimate
Prepare bread
.75 minutes
.75 minutes
1 minute
1 minute
Prepare meat
.5 minutes
.8 minutes
1.5 minutes
1.5 minutes
Toast
.5 minutes
.5 minutes
.5 minutes
.75 minutes
Wrap
.5 minutes
.5 minutes
1 minute
.5 minutes
Checkout
.5 minutes
.5 minutes
.5 minutes
.5 minutes
Suppose that there is one worker at each step. Answer the following questions.
1. Defining one flow unit as one minute of work, what is the capacity per day for the worker at “Toast” step? Round your answer to the nearest integer. Your answer is . (1 point)
2. Defining one flow unit as one minute of work, what is the demand rate per day for the worker at “Toast” step? Round your answer to the nearest integer. Your answer is . (1 point)
3. The implied utilization rate for the worker at “Toast” step is . Ignore the percentage sign and round your answer to the nearest integer. For example, if your answer is 43.21%, input 43. (1 point)
4. The implied utilization rate for the worker at “prepare bread” step is . Ignore the percentage sign and round your answer to the nearest integer. For example, if your answer is 43.21%, input 43. (1 point)
5. The implied utilization rate for the worker at “prepare meat” step is . Ignore the percentage sign and round your answer to the nearest integer. For example, if your answer is 43.21%, input 43. (1 point)
6. The implied utilization rate for the worker at “Wrap” step is . Ignore the percentage sign and round your answer to the nearest integer. For example, if your answer is 43.21%, input 43. (1 point)
7. Worker at which step is the bottle neck resource? Input 1 for the worker at “prepare bread” step; input 2 for the worker at “prepare meat” step; input 3 for the worker at “toast” step; input 4 for the worker at “wrap” step; and input 5 for the worker at “checkout” step. Your answer is . (1 point)
8. The manager expects a demand increase for all sandwiches due to a promotion. The daily total demand is estimated at 640 sandwiches under this promotion. The demand distribution among the four types of sandwiches also shifts to 25%, 25%, 40%, and 10% for C, P, E, and U sandwiches. Other parameters stay the same. The implied utilization rate for the worker at “Toast” becomes . Ignore the percentage sign and round your answer to the nearest integer. For example, if your answer is 43.21%, input 43. (1 point)
9. Under the new demand distribution, worker at which step is the bottle neck resource? Input 1 for the worker at “prepare bread” step; input 2 for the worker at “prepare meat” step; input 3 for the worker at “toast” step; input 4 for the worker at “wrap” step; and input 5 for the worker at “checkout” step. Your answer is . (1 point)
Step
Classic
Premium
Exotic
Ultimate
Prepare bread
.75 minutes
.75 minutes
1 minute
1 minute
Prepare meat
.5 minutes
.8 minutes
1.5 minutes
1.5 minutes
Toast
.5 minutes
.5 minutes
.5 minutes
.75 minutes
Wrap
.5 minutes
.5 minutes
1 minute
.5 minutes
Checkout
.5 minutes
.5 minutes
.5 minutes
.5 minutes
Explanation / Answer
Step Classic Premium Exotic Ultimate Total Done Available time (10 *60) mins Per unit time Capacity= (Available time/Per unit time Prepare bread 0.75 0.75 1 1 Prepare meat 0.5 0.8 1.5 1.5 Toast 0.5 0.5 0.5 0.75 Wrap 0.5 0.5 1 0.5 Checkout 0.5 0.5 0.5 0.5 P 0.3 0.2 0.45 0.05 Flow unit 150 100 225 25 500 Ans 1 Toast time (Flow * Toast) 75 50 112.5 18.75 256.25 600 1 600 70% 179.375 30% Ans 2 Toasts demand @1 min (Flow *1 ) 150 100 225 25 500 Demand rate Ans 3 Utilization rate for 500 = (500/600) 83% Actual Utilization rate 43% (256.5/600) Implied utilization 30% Ans 4 Prep bread (Flow * Toast) 112.5 75 225 25 437.5 600 1 600 Actual Utilization rate 73% (437.5/600) Ans 5 Prep Meat (Flow * Toast) 75 80 337.5 37.5 530 600 1 600 Actual Utilization rate 88% (530/600) Ans 6 Wrap (Flow * Toast) 75 50 225 12.5 362.5 600 1 600 Actual Utilization rate 60% (362.5/600) 7 Bottleneck is Prep Meat. Input 2 8. and 9: Step Classic Premium Exotic Ultimate Total Done Available time (10*60) mins Per unit time Capacity= (Available time/Per unit time Prepare bread 0.75 0.75 1 1 Prepare meat 0.5 0.8 1.5 1.5 Toast 0.5 0.5 0.5 0.75 Wrap 0.5 0.5 1 0.5 Checkout 0.5 0.5 0.5 0.5 P 0.25 0.25 0.4 0.1 Flow unit 150 150 240 60 Toast time (Flow * Toast) 75 75 120 45 315 600 1 600 70% 220.5 37% Toasts demand @1 min (Flow *1 ) 150 150 240 60 600 Demand rate Utilization rate for 500 100% Actual Utilization rate 53% (315/600) Implied Utilization rate 37% Prep bread (Flow * Toast) 112.5 112.5 240 60 525 600 1 600 Actual Utilization rate 88% (525/600) Prep Meat (Flow * Toast) 75 120 360 90 645 600 1 600 Actual Utilization rate 108% (645/600) Wrap (Flow * Toast) 75 75 240 30 420 600 1 600 Actual Utilization rate 70% (420/600) 8 37% 9 Bottleneck is Prep Meat. Input 2
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