Chapter 14

The demand for subassembly S is 90 units in week 7. Each unit of S requires 1 unit of T and 1 unit of U. Each unit of T requires 2 units of V, 1 unit of W, and 2 units 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,2 weeks to make V,2 weeks to make W,1 week to make X,2 weeks to make Y, and 2 weeks to make Z. C. 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 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. Modify the gross material requirements plan to reflect this change (type 0 if the input box is not used). The product structure. The time-phased product structure. \begin{tabular}{cc|cc} \hline Item & On-HandInventory & Item & On-HandInventory \\ \hline S & 20 & W & 25 \\ T & 20 & X & 30 \\ U & 40 & Y & 40 \\ V & 30 & Z & 600 \\ \hline \end{tabular}