Refer again to Problems 14.5. In addition to 100 units of S, there is also a demand for 20 units of U, which is a component of S. 

The 20 units of U are needed for maintenance purposes. These units are needed in week 6. Additionally, a new order has been received for 80 units of S due in week 8. Modify the net requirements plan to reflect these changes

Data from problem 14.5

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.

Figure 14.13 Information for Problems 14.11 and 14.12 PERIOD Gross requirements: A ITEM A B C D ON HAND 0 100 50 50 LEAD TIME 1 2 2 1 8 100 9 ITEM E F G 10 50 ON HAND 75 75 75 11 12 150 LEAD TIME 2 2 1