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The demand for subassembly S is $140$ units in week $7.$ Each unit of S requires $2$ units 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$,2$ weeks 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.

Construct a gross material requirements plan $($type $0$ if the input box is not used$).$

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The product structure.

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