1. How long will you take to fill a rush order?
Creating a Gantt Chart (used in our group discussion) we can easily see that the following orders (of the same type cookie can be done as follows:
1 Dozen = 26 minutes
2 Dozen = 36 minutes 3 Dozen = 46 minutes

2. How many orders can you fill in a night, assuming you are open four hours each night?
In order to find out how many orders we can fill in a specific period of time we need to understand the bottleneck step and calculate the cycle time. In our process the bottleneck is the oven with a total cycle time of 10 minutes.
The capacity of this process is 6 trays per hour. So in 4 hours we would have ( 6 x 4 ) 24 trays of cookies. *This assumes that the after baking activities could be completed after store closing. If we take into consideration the open hours only, the real capacity would be ((60 x 4)-8 / 60) or 3.73 hours and be able to produce only 22.38 trays.

3. How much of your own and your roommate's valuable time will it take to fill each order?
Looking at labor time we see the following: Resource | Activity | Time | You | Wash & Mix + Spoon | 6 + 2 = 8 minutes | Roommate | Prepare Oven + Pack + Payment | 1 + 2 + 1 = 4 minutes |
Total Resource time for 1 batch = 12 minutes
Total Resource time for 1 batch = 17 minutes
Total Resource time for 1 batch = 22 minutes

*For up to 3 orders the first operation only counts once
Idle time = 10 minutes!

4. For Kristen Cookies, develop a Gantt chart of the activities and the resources (Kristen, Roommate, and Oven). Determine the amount of idle time Kristen and Roommate has for each dozen cookies produced. What is the time for Kristen and Roommate if the orders are for two-dozen cookies (of the same type) or three-dozen?
As calculated for our group project and presented here we have the following:
(see embedded excel