Lets return to the DuoLever production planning problem where you had the following demand for the next four week planning period:

Period $1$: $120$ units

Period $2$: $130$ units

Period $3$: $100$ units

Period $4$: $150$ units

Each order has a set up cost of $$600$ and holding an item costs $$5$ per item$/$week$.$ Items consumed in the period do not incur any holding charges $-$ similar to the problem in the video. Assume there are no units in inventory after Period $0.$