The following table lists the components needed to assemble an end item, lead times, and quantities on hand.                     Item End B C D E F G H LT (wk) 1 2 3 3 1 2 1 2 Amount on hand 0 10 10 25 12 30 5 0           a. If 21 units of the end item are to be assembled, how many additional units of E are needed? (Hint: You don't need to develop an MRP plan to determine this.)   Additional units               b. An order for the end item is scheduled to be shipped at the start of week 13. What is the latest week that the order can be started and still be ready to ship on time? (Hint: You don't need to develop an MRP plan for this part either.)

In the following MRP planning schedule for Item J, indicate the correct net requirements, planned-order receipts, and planned-order releases to meet the gross requirements. Lead time is one week. Note: Leave the cells blank, whenever zero (0) is required. ITEM J Gross requirements On-hand Net requirements Planned-order receipt Planned-order release Item: J OH: 47 LT: 1 SS: 0 Q: L4L Period WEEK NUMBER 0 1 2 3 4 5 77 52 75 47 Gross requirements Scheduled receipts Projected available balance Net requirements Planned order receipts Planned order releases 2 5 77 52 75

Given the following information, develop a material requirements plan for end item A and its components. 50 and 80 units of A are needed at the beginning of week 6 and 8, respectively. On-Order Item A B с D E Item A BUDE C C(2) Week 3: 50 On-Hand 20 60 150 10 On-Hand 20 60 150 10 Week 3:30, Week 5:80 Week 3:50, Week 5:100 B Week 4: 50, Week 6: 100 Week 3: 50, Week 5: 80 D(3) The planned order release for Product B is: E 200 (Week 2) On-Order 200 (Week 2) A E D(3) Lead Time 1 wk 2 wks 1 wk 2 wks 1 wk Lead Time 1 wk 2 wks 1 wk 2 wks 1 wk C Order Size lot-for-lot 50 100 200 lot-for-lot Order Size lot-for-lot 50 100 200 lot-for-lot C E

What are the distinctions between MRP, DRP, and ERP?