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a., b., and c. Determine the cost of goods sold and ending merchandise inventory using the (a) FIFO inventory costing method, (b) LIFO inventory costing method, and (c) weighted-average inventory costing method assuming Dream Books uses the periodic inventory system. (Round weighted average cost per unit to the nearest cent and all other amounts to the nearest dollar.) i X More Info Beginning Merchandise Inventory Plus: Net Cost of Inventory Purchased Aug. 1 Beginning merchandise inventory, 11 books @ $12 each Cost of Goods Available for Sale Aug. 3 Sold 8 books @ $19 each Less: Ending Merchandise Inventory Cost of goods sold Aug. 12 Aug. 15 Aug. 20 Purchased 10 books @ $15 each Sold 6 books @ $19 each Purchased 2 books @ $19 each Enter any number in the edit fields and then c Aug. 28 Sold 4 books @ $22 each