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: Number of Units Per Unit Total Date Transaction Apr. 3 Inventory 25 $1,200 $30,000 8 Purchase 75 1,240 93,000 11 Sale 40 2,000 80,000 30 Sale 30 2,000 60,000 May 8 Purchase 60 1,260 75,600 10 Sale 50 2,000 100,000 19 Sale 20 2,000 28 Purchase 80 1,260 40,000 100,800 90,000 June 5 Sale 40 2,250 16 Sale 25 2,250 56,250 21 Purchase 35 1,264 44,240 28 Sale 44 2,250 99,000 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. Inventory, June 30 32,864 Cost of goods sold 310,776 2. Determine the inventory 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 31,240 Cost of goods sold 312,400 3. Determine the inventory on June 30 and the cost of goods sold for the three-month period, using the weighted average cost method and the periodic inventory system. Round intermediate calculation and final answers to the nearest whole dollar. Inventory, June 30 32,500 Cost of goods sold 311,140 4. Compare the gross profit and June 30 inventories using the following column headings. For those boxes in which you must enter subtracted or negative numbers use a minus sign. FIFO LIFO Weighted Average 525,250 $ 525,250 Sales $ 525,250 $ _a Cost of goods sold 310,776 x 312,400 X 311,140 x Gross profit $ 214,474 $ 212,850 $ 214,110 Inventory, June 30 $1 32,864 $ 31,240 $ 32,500