HOMEWORK ASSIGNMENT MRP PROBLEMS Now try problems 1

HOMEWORK ASSIGNMENT— MRP PROBLEMS Now try problems 1, 3, and 5 (parts a, c, and d) on pp. 681 -682 in your textbook. Answers to these problems are on the slides that follow. Note that problem 5 is very challenging, and will be done in detail in class.

E 1 a. F(2) G H J(2) D(4) L(2) J(2) A(4) D(2) Note: G is equivalent to G(1) and H is equivalent to 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. Stapler Top Assembly Cover Spring Slide Base Assembly Slide Assembly Base Spring Strike Pad Rubber Pad 2

Need 40 End Items End Item 3 a. L(2) L: 2 x 40 = K(3) B(2) J(3) G(2) B(2) H(4) B(2) 5 6 7 6 6 6 Total LT: a. C 80 C: 1 x 40 = 40 K: 3 x 40 = 120 – 10 – 15 – 20 70 25 100 B: 2 x 70 = 140 B: 2 x 25 = 50 B: 2 x 100 = 200 – 30 110 Total: 110 + 50 + 200 = 360 3 b. The longest lead time is 7 weeks. Thus, 8 – 7 = 1, the beginning of week 1.

5 a. Product Structure Tree P K G(3) L H(4) M(2) W N(2) Z(3)

5 c. Weeks 1 2 3 4 5 6 7 100 100 Net requirements 100 Planned-order receipts 100 Master Schedule Quantity 5 d. P LT = 1 wk. Beg. Inv. 1 2 3 4 5 Gross requirements Scheduled receipts Projected on hand Planned-order releases 100 Note that problem 5 d continues on the next three slides.

K LT = 2 wk. Beg. Inv. 1 2 3 4 Gross requirements Scheduled receipts 10 Projected on hand 10 5 6 100 30 10 30 Net requirements 90 70 Planned-order receipts 90 70 Planned-order releases 90 10 70 7

G(3) LT = 1 wk. Beg. Inv. 1 2 Gross requirements 3 4 270 210 Scheduled receipts Projected on hand 40 40 Net requirements 230 210 Planned-order receipts 253 231 Planned-order releases 253 231 5 6 7

H(4) LT = 1 wk. Beg. Inv. 1 2 3 4 360 280 200 40 Net requirements 160 240 Planned-order receipts 200 240 Gross requirements Scheduled receipts Projected on hand Planned-order releases 200 200 240 5 6 7