Ross White's machine shop uses $2500$ brackets curing the course of a vear, and this usage is relatively constant throughout the year. Th ackets are purchased from a supplier $100$ miles away for $$15$ e: the lead time is $2$ days. The holding cost per bracket per yea

$$1.($or $10\%$ of the unit cost$)$ and the ordering cost per order

$$18.$ There are $300$ working days per year.

a$.$ Develop a total cost model for this system. $(3$ points$)$

b$.$ What is it EOQ for this problem? $(3$ points$)$

c$.$ What is the ycle time? $(2$ points$)$