The demand for subassembly S is 100 units in week 7. Each unit of S requires 1 unit of T and 2 units of U. Each unit of T requires 1 unit of V, 2 units of W, and 1 unit of X. Finally, each unit of U requires 2 units of Y and 3 units of Z. One firm manufactures all items. It takes 2 weeks to make S, 1 week to make T, 2 weeks to make U, 2 weeks to make V, 3 weeks to make W, 1 week to make X, 2 weeks to make Y, and 1 week to make Z.

Construct a net material requirements plan using on-hand inventory (enter your responses as whole numbers).

		Week							Lead Time
Item		1	2	3	4	5	6	7	(weeks)
S	Gross req							nothing	2
	On hand							nothing
	Net req							nothing
	Order receipt							nothing
	Order release					nothing

Item	On-Hand Inventory	Item	On-Hand Inventory
S	20	W	30
T	20	X	25
U	40	Y	240
V	30	Z	40