Periodic inventory by three methods

The beginning inventory at Midnight Supplies and data on purchases and sales for a three-month period ending March 31 are as follows:

. 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. nventory, March 31 : cost of goods sold \$ 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. nventory, March 31$ cost of goods sold \$ nventory, March 31 ! Cost of goods sold $