The demand for subassembly S is

$150150$

units in week $7.$ Each unit of S requires

$22$

unitss

of T and

$11$

unitnothing

of U$.$ Each unit of T requires

$22$

unitss

of$$ V$,$

$22$

unitss

of$$ W$,$ and

$11$

unitnothing

of X$.$ Finally, each unit of U requires

$22$

unitss

of Y and

$22$

units of Z$.$ One firm manufactures all items. It takes $2$ weeks to make$$ S$,$

$11$

weeknothing

to make$$ T$,2$ weeks to make$$ U$,$

$22$

weekss

to make$$ V$,$

$33$

weeks to make$$ W$,$

$11$

weeknothing

to make$$ X$,2$ weeks to make$$ Y$,$ and

$11$

weeknothing

to make Z$.$

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Part $2$

Suppose that in addition to

$150150$

units of$$ S$,$ there is also a demand for

$2020$

units of$$ U$,$ which is a component of S$.$ The

$2020$

units of U are needed for maintenance purposes. These units are needed in week $6.$ Additionally, a new order has been received for

$9090$

units of S due in week $8.$ Modify the net material requirements plan to reflect these changes.

Part $3$

Construct a new net material requirements plan

$($enter

your responses as whole

numbers$).$