Periodic and Perpetual SystemsCompute Inventory, Cost of Sales, and Gross Margin using Average Cost, Moving Average, FIFO, and LIFO

Date Units Unit Cost Nov. 1 Inventory 3,000 $6.90 Nov. 3 Purchase 6,000 $7.20 Nov. 5 Sales (at $15) 4,000 Nov. 13 Purchase 5,000 $7.50 Nov. 20 Sales (at $15) 9,000 Nov. 22 Purchase 11,000 $7.66 Nov. 28 Sales (at $18) 9,000 Nov. 30 Purchase 6,000 $7.80 Compute ending inventory, cost of goods sold, and gross margin using the following: Ending Cost of Gross Inventory Goods Sold Margin a. Average cost (periodic inventory system). $ $ b. FIFO (period inventory system). $ c. LIFO (periodic inventory system). d. Moving Average (perpetual inventory system). e. FIFO (perpetual inventory system). f. LIFO (perpetual inventory system)