Aircard Corporation tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each period as if it uses a perpetual inventory system. The following are the transactions for the month of July. Unit Units Cost Beginning July 1 3,100 $51 Inventory July 5 Sold 1,550 July 13 Purchased 7100 55 July 17 Sold 4,100 July 25 Purchased 9,100 61 July 27 Sold 6,100 es Calculate the cost of ending inventory and cost of goods sold assuming a perpetual inventory system is used in combination with (a) FIFO and (6) LIFO. (a) FIFO FIFO (Portal) Units Cost per Unit Total $ 0 O Beginning Inventory Purchases July 13 July 25 Total Purchases Goods Available for Sale Cost of Goods Sold Units from Beginning inventory Units from July 13 Purchase Units from July 25 Purchase Total cost of Goods Sold Ending Inventory (b)LIFO LIFO (Perpetual) Units Cost per Unit Total $ 0 Beginning Inventory Purchases July 13 July 25 Total Purchases Goods Available for Sale Cost of Goods Sold Units from Beginning Inventory Units from July 13 Purchase Units from July 25 Purchase Total Cost of Goods Sold Ending Inventory 0