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The following are the transactions for the month of July. Unit Selling Price Unit Cost $10 13 Units 100 500 (200) July 1 Beginning inventory July 13 Purchase July 25 Sold $15 July 31 Ending inventory 400 Required: Calculate cost of goods available for sale and ending inventory, then sales, cost of goods sold, and gross profit, under (a) FIFO, (b) LIFO, and (c) weighted average. Assume a periodic inventory system is used. (Input all amounts as positive values. Do not round Weighted average cost per unit. Round your final answers to the nearest dollar amount. Omit the "$" sign in your response.) FIFO Weighted average LIFO $ $ $ Goods Available for Sale Ending Inventory Sales Cost of goods sold Gross profit $