1. The average demand of Product X is 200 units per month with the standard deviation 50 units per month and the delivery lead time 3 months. What is the ROP if the company wants to maintain a service level of 95%?
- About 600 units
- About 850 units
- About 750 units
- About 165 units
2. Product Z costs $10 each and has a holding cost rate of 25% per year. The ordering costs are $100 per order, and the annual demand is 4,500 units. The economic order quantity is about 600 units. Determine the total inventory costs (i.e., ordering costs + holding costs) per year.
- About $600
- About $750
- About $1,200
- About $1,500