Oahu Kiki tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each month as if it uses a periodic inventory system. Assume Oahu Kikis records show the following for the month of January. Sales totalled 250 units. Date Units Unit Cost Total Cost Beginning Inventory January 1 125 $ 8.2 $ 1,025 Purchase January 15 390 9.1 3,549 Purchase January 24 205 11.2 2,296