Inventory Costing Methods-Perpetual Method The Luann Company uses the perpetual inventory system. The following July data are for an item in Luann's inventory: July 1 Beginning inventory 30 units @ 10 Purchased 15 Sold $9 per unit 50 units @ $11 per unit 60 units 26 Purchased 25 units @ $13 per unit Calculate the cost of goods sold for the July 15 sale using (a) first-in, first-out, (b) last-in, first-out, and (c) the weighted-average cost methods. Round your final answers to the nearest dollar. For weighted-average cost, do not round the weighted-average unit cost. A. First-in, First-out: Cost of Goods Sold: $ 600 B. Last-in, first-out: Cost of Goods Sold $ 640 C. Weighted-average cost: Cost of Goods Sold $ 654 x Check