Thomas Kratzer is the purchasing manager for the headquarters of a large insurance company chain with a central inventory operation.$$ Thomas's fastest$-$moving inventory item has a demand of $6,100$ units per year. The cost of each unit is $$$$104,$ and the inventory carrying cost is $$$$9$ per unit per year. The average ordering cost is $$$$31$ per order. It takes about $5$ days for an order to$$ arrive, and the demand for $1$ week is $122$ units.$($This is a corporate$$ operation, and there are $250$ working days per$$ year$).$

Part $2$

$$a$)$ What is the$$ EOQ? $204\mathrm{.}99$ units $($round your response to two decimal$$ places$).$

Part $3$

$$b$)$ What is the average inventory if the EOQ is$$ used? $102\mathrm{.}50$ units $($round your response to two decimal$$ places$).$

Part $4$

$$c$)$ What is the optimal number of orders per$$ year? $29\mathrm{.}75$ orders $($round your response to two decimal$$ places$).$

Part $5$

$$d$)$ What is the optimal number of days in between any two$$ orders? $8\mathrm{.}40$ days $($round your response to two decimal$$ places$).$

Part $6$

$$e$)$ What is the annual cost of ordering and holding$$ inventory? $$$$1,844\mathrm{.}94$ per year $($round your response to two decimal$$ places$).$

Part $7$

$$f$)$ What is the total annual inventory$$ cost$,$ including the cost of the $6,100$units$?$$enter your response here per year $($round your response to two decimal$$ places$).$