Leilani$$ Lavender's law office has traditionally ordered ink refills units at a time. The firm estimates that carrying cost is $\%$ of the $$$ unit cost and that annual demand is about units per year. The assumptions of the basic EOQ model are thought to apply.

Part $2$

$$a$)$ For what value of ordering cost would its action be$$ optimal?

Its action would be optimal given an ordering cost of $$$

$$

enter your response here per order $($round your response to two decimal$$ places$).$