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Periodic Inventory by Three Methods The beginning inventory for Dunne Co. and data on purchases and sales for a three-month period are as follows: Required: 1. Determine the inventory on June 30 and the cost of goods sold for the three-month period, using the first-in, first-out method and the periodic inventory system. 5. 2. Determine the inventory on June 30 and the cost of goods sold for the three-month period, using the la 1. Determine the inventory on Juhe 30 and the cost of goods sold for the three-month period, using the first-in, first-out method and the periodic inventory system. Inventory, June 30 Cost of goods sold 2. Determine the-itventory on June 30 and the cost of goods sold for the three-month period, using the last-in, first-out method and the periodic inventory system. Inventory, June 30 Cost of goods sold 3. Determine the irventory on June 30 and the cost of goods sold for the three-month period, using the weighted avirage cost method and the periodic inventory system. Note: Round the weighted average unit cost to the nearest dollar and final answers to the nearest dollar Inventory, June 30 Cost of goods sold 41 4. Compare the gross profit and June 30 inventories using the following columin headings. For those boxes in which you must enter subtracted or negative numbers use a minus sign