Problem 14.8 Question Help The demand for subassembly S is 90 units in week 7. Each unit of S requires 2 units of T and 1 unit of U. Each unit of T requires 1 unit of V, 1 unit of W, and 1 unit of X. Finally, each unit of U requires 1 unit of Y and 2 units of Z. One firm manufactures all items. It takes 2 weeks to make S, 2 weeks to make T, 2 weeks to make U, 1 week to make V, 2 weeks to make W, 1 week to make X, 2 weeks to make Y, and 2 weeks to make Z. Click the icon to view the product structure and the time-phased product structure. In addition to 90 units of S, there is also a demand for 30 units of U, which is a component of S. The 30 units of U are needed for maintenance purposes. These units are needed in week 6. Modify the gross material requirements plan to reflect this change (type 0 if the input box is not used). Week Lead Time (weeks) Item 1 2 3 4 5 6 7 S Gross req Order release 2 hich is neede i More Info The product structure. The time-phased product structure. Level V S O W T T (2) U(1) X Y S 1 e LY U Z 2 V(1) W(1) X(1) Y(1) Z(2) 6 2 3 4 5 Time in weeks Print Done Week Lead Time (weeks) 1 2 3 4 5 6 7 Item S L. IL N T 1 U 2 V 1 Gross req Order release Gross req Order release Gross req Order release Gross req Order release Gross req Order release Gross req Order release Gross req Order release Gross req Order release W 3 1 Y 2 Z 2