1.XYZ is a retailer and sells 144,000 units per year. It purchases from a single supplier.Fixed costs per order are $846 and carrying cost is $8 per unit. How many units should XYZ purchase per order? That is, what is the Economic Order Quantity

2.XYZ is a retailer and sells 144,000 units per year. It purchases from a single supplier.Fixed costs per order are $897 and carrying cost is $10 per unit per year. In economic order quantity model, what would be the lowest total inventory cost? That is, the lowest sum of total carrying cost and total shortage cost.