Required: Do you need to ask your boss for her copy of the annual report, or can you develop the informa- tion from her notes? Explain and show calculations. E7-5 Calculating Cost of Ending Inventory and Cost of Goods Sold under Lo 7-3 Periodic FIFO, LIFO, and Weighted Average Cost 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 Kiki's records show the following for the month of January. Sales totaled 240 units Total Cost Units 120 380 200 Unit Cost Beginning Inventory Purchase Purchase Date January 1 January 15 January 24 $ 80 90 110 34,200 22,000 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