Dumfries Industries is generating a materials requirement planfor the next six weeks. Here is its most current information:
Master Production Schedule
Week | 1 | 2 | 3 | 4 | 5 | 6 |
Item A | 10 | 0 | 20 | 20 | 10 | 10 |
Other information
Item | Item’s Parent | Lead time | Lot size | Current inventory |
A | None | 1 week | LFL | 20 |
B | A | 1 week | 20 | 20 |
C | B | 1 week | 50 | 20 |
How many levels does a product structure for Dumfries item Ahave?
Using MRP methodology, how much of Parts A, B, and C should beordered, and when should they be ordered?
Which item will experience the highest average inventory,following this plan?
Consider the following three jobs: Job Alpha requires two weeksof work and is due in four weeks. Job Beta requires three weeks ofwork and is due in five weeks. Job Carlos requires one week of workand is due in three weeks. If these jobs are completed inalphabetical order, how late will Job Beta be?
Suppose you have three jobs waiting to be completed, and youmust determine the sequence in which these jobs should be workedon. You calculated the critical ratio for each of the jobs and theresults were that Job A has a critical ratio of 1.27, Job B has acritical ratio of -0.89, and Job C has a critical ratio of 0.15.Which of these jobs is already late? Why?
