Altira Corporation uses a periodic inventory system. The following information related to its merchandise inventory during the month of August 2018 is available Aug.1 Inventory on hand-9,500 units; cost $8.20 each 8 Purchased 28,000 units for $7.30 each 14 Sold 20,000 units for $13.80 each 18 Purchased 15,000 units for $6.80 each. 25 Sold 19,000 units for $12.80 each 31 Inventory on hand-13,500 units Required: Determine the inventory balance Altira would report in its August 31, 2018, balance sheet and the cost of goods sold it would report in its August 2018 income statement using each of the following cost flow methods