The following are the transactions for the month of July Unit Units Unit Cost Selling Price $10 July 1 Beginning Inventory July 13 Purchase July 25 Sold 60 300 12 $16 (100) July 31 Ending Inventory 260 Calculate cost of goods available for sale and ending inventory, then sales, cost of goods sold, and gross profit, under (a) FIFO (b) LIFO, and (c) weighted average cost. Assume a periodic inventory system is used. (Round "Cost per Unit" to 2 decimal places and your final answers to nearest whole dollar amount.)