Ross White's machine shop uses 2,500 brackets during the course of a year. This usage is relatively constant throughout the year, too. These brackets are purchased from a supplier 100 miles away for $15 each, and the lead time is two days. The holding cost per bracket per year is $1.50 (or 10% of the unit cost), and the ordering cost per order is $18.75. There are 250 working days per year.

1. What is the EOQ?
2. Given the EOQ, what is the average inventory? What is the annual inventory holding cost?
3. In minimizing cost, how many orders would be made each year? What would be the annual ordering cost?
4. Given the EOQ, what is the total annual inventory cost, including purchase cost?
5. What is the time between orders?
6. What is the ROP?