1.- a. Given the following diagram for a product, determine the quantity of each component required to assemble one unit of the finished product. b. Draw a tree diagram for the stapler: (Stevenson 543)
Stevenson, William J.. Operations Management, 11th Edition. McGraw-Hill Learning Solutions, 2011. .

1. a. F: 2 G: 1 H: 1 J: 2 x 2 = 4 L: 1 x 2 = 2 A: 1 x 4 = 4 D: 2 x 4 = 8 J: 1 x 2 = 2 D: 1 x 2 = 2 Totals: F = 2; G = 1; H = 1; J = 6; D = 10; L = 2; A = 4
1.b.

2.-The following table lists the components needed to assemble an end item, lead times, and quantities on hand. a. If 20 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.)

a. B: 20 x 2 = 40 – 10 = 30 C: 20 x 1 = 20 – 10 = 10 D: 20 x 3 = 60 – 25 = 35 E: 30 x 2 = 60 – 12 = 48 E: 10 x 2 = 20 E: 35 x 2 = 70
Total: 48 + 20 + 70 = 138

b. An order for the end item is scheduled to be shipped at the start of week 11. 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.)

Total LT 4 5 5 5 6 5
The longest sequence is 6 weeks. Week 11 – 6 weeks = Week 5.

3.- The following table lists the components needed to assemble an end item, lead times (in weeks), and quantities on hand. a. If 40 units of the end item are to be assembled, how many additional units of B are needed? (Hint: You don’t need to develop an MRP plan.)
3.

Total LT: 5 6 7 6 6 6

a. L: 2 x 40 = 80 C: 1 x 40 = 40 K: 3 x 40 = 120 –10 –15 –20 70 25 100 b. An order for the end item is scheduled to be shipped at the start of week 8. 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.) B: 2 x 70 = 140 B: 2 x 25 = 50 B: 2 x 100 = 200 –30 110 Total: 110 + 50 + 200 = 360
The longest lead time is 7 weeks. Thus, 8 – 7 = 1, the beginning of week 1.