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Kristen's Cookie Company

In: Business and Management

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Homework #1: Kristen’s Cookie Company

Case 1

6+2+1+9+5+2+1 = 26 mins

Resources Activities where needed Time required per unit of work Number of each resource Capacity
Kristen Wash and Mix
Dish up to trays 6 min
2 min 1 7.5 dozen/hr
Bowl Wash and Mix 6 min 1 10 dozen/hr
Trays Dish up to trays 2 min Infinite Infinite dozens/hr Roommate Load & Set Timer
Packing
Payment 1 min
2 min
1 min 1 15 dozen/hr
Oven Load & Set Timer
Baking 1 min
9 min 1 6 dozen/hr
Empty space Cooling 5 min Infinite Infinite dozens/hr The oven is the bottleneck resource. Its capacity is 6 dozen cookies per hour.
Because the process’s hourly capacity is 6 dozen, the process’s cycle time is 10 min. Therefore the maximum number of dozens that the process can produce can be given with the help of the following formula: 16 + 10x = 240 x = 22.4 The maximum number of dozens that the process can produce in four hours is 22.

16 + 10x = 60 x = 4.4 λ = 4.4 dozen/hr W = flow time = 26 min = 26/60 hr L = λ W = 1.91

Case 2

Resources Activities where needed Time required per unit of work Number of each resource Capacity
Kristen Wash and Mix
Dish up to trays 6 min
4 min 1 6 orders/hr
Bowl Wash and Mix 6 min 1 10 orders/hr
Trays Dish up to trays 4 min Infinite Infinite orders/hr Roommate Load & Set Timer
Packing
Payment 2 min
4 min
1 min 1 8.57 orders/hr
Oven Load & Set Timer
Baking 2 min
18 min 1 3 orders/hr
Empty space Cooling 10 min Infinite Infinite orders/hr The bottleneck resource is the oven, the capacity of the process is 3 orders per hour.

Resources Activities where needed Time required per unit of work Number of each resource Capacity
Kristen Wash and Mix
Dish up to trays
Load & Set Timer
Packing
Payment 6 min
4 min
2 min
4 min
1 min 1 3.53 orders/hr
Bowl Wash and Mix 6 min 1 10...

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