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Week 1 2 3 4 5 6 7 8 9 10 Demand 41 44 84 42...

Week 1 2 3 4 5 6 7 8 9 10
Demand 41 44 84 42 84 86 7 18 49 30

End item A has a planned lead time of two weeks. There are currently 120 units on hand and no scheduled receipts.
a. Compute the planned order releases using lot-for-lot
b. Compute the planned order releases using part-period balancing where the ratio of the setup cost to the holding cost is 200
c. Compute the planned order releases with Wagner Whitin, where the ratio of setup cost to holding cost is 200. How much lower is the cost of the plan than in part (a,b)?
d. Rework part (a) with 50 units of safety stock and identify differences with part (a).

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