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E7-5 Calculating Cost of Ending Inventory and Cost of Goods Sold under Periodic FIFO, LIFO, and Weighted Average Cost [LO 7-3 Oahu Kiki tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method January. Sales totaled 270 units as if it uses a periodic inventory system. Assume Oahu Kikis records show the following for the month of Date Units Unit Cost Total Cost Beginning Inventory January 1 148 $ 75 $10,580 Purchase January 15 300 Danuary 24 240 105 25, 500 25,200 85 Purchase Required: 1. Calculate the number and cost of goods available for sale. 2. Calculate the number of units in ending inventory 3. Calculate the cost of ending inventory and cost of goods sold using the (a)FIFO. (b) LIFO, and (c)weighted average cost methods