Please solve the following problems. You can use Ms. Excel or Word. EOQ model. A retailer sells an item to a market where the annual demand is 10,000 units. The unit wholesale price is $5, the annual holding cost per unit is $3 and the cost to place an order is $100. 1.1. What is the economic order quantity? (0.5 Point) 1.2. What is the total inventory cost? (0.5 Point) Reorder point. A retailer sells an item to a market. To meet the market demand, the retailer uses a supplier whose delivery time (or lead time) is 5 days. The expected demand and its variance during the lead time are 50 and 5 units, respectively. If the service level is 95%: 2.1. What is the safety stock? (0.5 Point) 2.2. What is the reorder point? (0.5 Point) Single period or newsvendor model. A retailer sells an item to a market over a single period or season. The retailer purchases the item from a supplier by $5/unit and then sell them to the market by $10/unit. The leftover at the end of the season are sold at a secondary market by $3/unit (it is the salvage value). The expected demand and the variance are 100 and 20 units, respectively. What is the optimum order quantity? (1 Point)