With the following forecasted demand data, prepare an aggregate plan using a constant

level strategy.

The initial inventory is $500$ products and it is desired to have a final inventory of $400$

products in December. To produce a product, $5$ hours per employee are required $($that

is$,1$ product every $5$ hours $/$ worker$).$ There are currently $20$ days available to work each

month and each employee works $8$ hours each day. At this moment there are $35$

workers.