E7-17 (Static) (Supplement 7A) Calculating Cost of Ending Inventory and Cost of Goods Sold under Perpetual FIFO and LIFO [LO 7-S1] Oahu Kiki tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing metho perpetually at the time of each sale, as if it uses perpetual inventory system. Assume Oahu Kiki's records show the following for the month of January. The company sold 240 units between January 16 and 23 Required: Calculate the cost of ending inventory and the cost of goods soid using the FIFO and LIFO methods