A) Compute the makespan T, i.e. the time at which the last customer exits the system (in minutes).
B) How long (in minutes) does the average customer spend in the system?
C) On average, how many customers are in the system (take the average from time 0 to time T)?
D) Compute the total waiting time (in minutes).
Homework Answers
| waiting time | |||||||
| Customer | Interarrival Time | Cummulative time | Start time | Service Time | finish time | Shopkeeper | Customer |
| 1 | 1 | 1 | 1 | 3 | 4 | 1 | |
| 2 | 2 | 3 | 4 | 3 | 7 | 1 | |
| 3 | 3 | 6 | 7 | 2 | 9 | 1 | |
| 4 | 4 | 10 | 10 | 2 | 12 | 1 | |
| Total | 2 | 2 | |||||
| ans 1 | Makespan time T will be 12 minutes | ||||||
| ans 2 | Average customer spend in system | 2minutes/ 4 customers = .5 minutes | |||||
| ans 3 | Two customers | ||||||
| ans 4 | Total waiting time of customers is 2 minutes | ||||||
| Total waiting time shopkeeper is 2 minutes |
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