There is the following problem to schedule production for the next 4 months, in order to supply a certain specific demand per period as indicated in the table. The information available is the following: a preparation cost of $25,000 in periods 1 and 3, while in periods 2 and 4 the production preparation cost will be $35,000. In the case of the cost of maintaining a unit for a period in inventory is $28.

Period	1	2	3	4
Demand	400	350	450	250
Unit price	45	44	47	47

You should record the answer of the optimal solution with lowest inventory costs to two decimal places.