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Periodic inventory by three methods The beginning inventory for Midnight Supplies and data on purchases and sales for a three-month period are shown below: Number Date Transaction of Units Per Unit Total Jan. 1 Inventory 7,500 $75.00 $562,500 10 Purchase 22,500 85.00 1,912,500 28 Sale 11,250 150.00 1,687,500 30 Sale 3,750 150.00 562.500 Feb. 5 Sale 1,500 150.00 225,000 10 Purchase 54,000 87.50 4,725,000 16 Sale 27,000 160.00 4,320,000 28 Sale 25,500 160.00 4,080,000 Mar. 5 Purchase 45,000 89.50 4,027,500 14 Sale 30,000 160.00 4,800,000 25 Purchase 7,500 90.00 675,000 30 Sale 26,250 160.00 4,200,000 1. Determine the inventory on March 31 and the cost of goods sold for the three-month period, using the first-in, first-out method and the periodic inventory system. , --. Inventory, March 31 $ Cost of goods sold $ 2. Determine the inventory on March 31 and the cost of goods sold for the three-month period, using the last-in, first-out method and the periodic inventory system. Inventory, March 31 , Cost of goods sold 3. Determine the inventory on March 31 and the cost of goods sold for the three-month period, using the weighted average cost method and the periodic inventory system. Round the weighted average unit cost to the nearest cent Inventory, March 31 $ Cost of goods sold 4. Compare the gross profit and the March 31 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 Sales $ $ Cost of goods sold Gross profit $ $ $ Inventory, March 31 $ $ $