REDUCTION IN WAITING TIME
P1
| Lq = | ||
| W = | ||
| Wq = | ||
| If the arrival rate increases to 12 per hr., what would happen? |
P2
| ONE TELLER | |
| Wq = | |
| TWO TELLERS | |
| Wq = | |
| REDUCTION IN WAITING TIME = | |
| ANNUAL INCREASE IN BANK REVENUES = | |
| ANNUAL COST OF ADDITIONAL WINDOW = | |
| BENEFIT FROM ADDING A SECOND WINDOW = |
P3
| a) CURRENT SITUATION | |||
| Lq = | |||
| W = | |||
| Wq = | |||
| TRUCKS REMAIN ___ MINUTES INSTEAD OF ___ MINUTES | |||
| OR ___MINUTES EXTRA AT A COST OF $____ PER MIN. = ________ | |||
| IN LOST REVENUES. | |||
| b) USING TWO SCALES | |||
| Lq = | |||
| W = | |||
| Wq = | |||
| TRUCKS REMAIN ___ MINUTES INSTEAD OF ___ MINUTES | |||
| OR ___ MINUTES EXTRA AT A COST OF $_____ PER MIN. = | |||
| IN LOST REVENUES. | |||
| COST OF SECOND SCALE | |||
| BENEFIT FROM ADDING SECOND SCALE |
P4
| ADDING SECOND ADVISOR | ||||||
| L = | ||||||
| Lq = | ||||||
| W = | ||||||
| Wq = | ||||||
| Should the second advisor be added? | ||||||
| Explain |
P5
| a) USING CURRENT REPAIR SERVICE | ||||||
| W = | ||||||
| LOST REVENUES = | per machine | |||||
| b) USING NEW REPAIR SERVICE | ||||||
| W = | ||||||
| LOST REVENUES = | ||||||
| SAVING IN REVENUES = | ||||||
| EXTRA COST OF SERVICE = | ||||||
| 24x vs. 12(x+10) | ||||||
| x | x + 10 | 24x | 12(x+10) | difference | ||
| 10 | ||||||
| 20 | ||||||
| 5 |
