Final answer:
The minimum time for an order to be completed at Subway given the tasks completed by Jim, Tim, and Kim is 25 minutes. This includes the longest task performed in parallel and the serial tasks.
Step-by-step explanation:
To calculate the minimum time for an order to be completed at the sandwich shop run by Jim, Tim, and Kim, we need to consider the tasks that are performed in series and parallel. Jim's initial order-taking and final assembling are serial tasks, each taking 5 minutes.
Tim's bread preparation and Kim's filling preparation occur in parallel. Since these parallel tasks take 7 and 10 minutes respectively, we consider the longer duration, which is 10 minutes. Finally, Tim's delivery and payment are another serial task that takes 5 minutes.
- Jim takes the order: 5 minutes
- Tim prepares bread: 7 minutes (parallel)
- Kim prepares filling: 10 minutes (parallel)
- Jim assembles sandwich: 5 minutes
- Tim delivers order and takes payment: 5 minutes
Adding the longest parallel task (10 minutes) to the serial tasks (5 + 5 + 5 minutes), the total minimum time for an order to be completed is 25 minutes.