Kristen’s cookie company pre-case report
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1. Draw a flow chart of the cookie-making process

2. How long will it take to fill a rush order of 1-dozen cookie?

It will take 26 minutes to fill a rush order of 1-dozen cookie. (I revise my chart to 4 cycle orders) 3. What is the cycle time? How many orders can you fill in a night (4-hour period)? Does your answer depend on the size of the order, 1-dozen, 2-dozen, or 3-dozen?
1-dozen orders: The cycle time is 10 minutes. The first order of 1-dozen cookies will take 26 minutes, and each 10 minutes for another 1-dozen cookie order.
(4*60-26)/10=21.4 plus the first order, we can make 22 orders of 1-dozen cookie fill in a night.

2-dozen orders: The cycle time is 20 minutes. The first order of 2-dozen cookies will take 36 minutes, and each 20 minutes for another 2-dozen cookie order.
(4*60-36)/20=10.2 and plus the first order, we can make 11 orders of 2-dozen cookie fill in a night.

3-dozen orders: The cycle time is 30 minutes. The first order of 3-dozen cookies will take 46 minutes, and each 30 minutes for another 3-dozen cookie order.
(4*60-46)/30=6.47 and plus the first order, we can make 7 orders of 3-dozen cookie fill in a night.

4. What is the difference in labor (both you and your roommate’s time) per dozen among 1-dozen, 2-dozen, and 3-dozen orders?
1-dozen orders: Me: Wash and Mixing 6 minutes + fill the tray 2 minutes = 8 minutes +my roommate: Setting timer and putting in the oven 1 minute +Packing and collecting money 3 minutes = 4 minutes, and 12 minutes in total. 12mins/per dozen
2-dozen orders- Me: Wash and Mixing 6 minutes + fill the tray 4 minutes = 10 minutes +My roommate: Setting timer and putting in the oven 2 minutes (2 times) +Packing and collecting money 5 minutes(packing 2 times) = 7 minutes, and 17 minutes in total. 8.5mins/per dozen
3-dozen orders- Me: Wash and Mixing 6 minutes + fill the tray 6 minutes = 12 minutes +My roommate: Setting timer and putting in the oven 3 minutes (3 times) +Packing and collecting money 7 minutes(packing 3 times) = 10 minutes, and 22 minutes in total. 7.3mins/per dozen 5. Based PURELY on your answer to question 4, will you offer any discount for 2-dozen and 3-dozen orders? Why?
I will offer a discount. Because we can use our time more effective for 2-dozen and 3-dozen orders. 6. How many electric mixers and baking trays will you need? Why?
I will need one electric mixer and 3 baking trays. Because the most dozens of an order are 3 dozens, we only need 3 trays. And the electric mixers can already mix 3 dozens at one time. 7. How can you tell that the oven and the baking activity is the bottle neck? What is the effect of adding another oven in term of cycle time and capacity? How much in general would you be willing to pay to rent an additional oven? Resource | 1- dozen | 2- dozen | 3-dozen | Me | 7.5 | 12 | 15 | Roommate | 15 | 17.4 | 18 | Oven | 6 | 6 | 6 |

Because the oven and the baking activity take the longest time lowest capacity, it is bottleneck. (I add a chart to figure out which is activity is the bottle neck of 1-dozen order) Resource | 1- dozen | 2- dozen | 3-dozen | Me | 7.5 | 12 | 15 | Roommate | 15 | 17.4 | 18 | Oven | 12 | 12 | 12 |

The above chart shows the new capacity if we add one oven. (I also add a chart to figure out which is activity is the bottle neck of 2-dozen orders)
I will be willing to pay if the number of 2-dozen and 3-dozen orders are more than 1-dozen order.