Sales during the year were 620 units. Beginning inventory was 230 units at a cost of $6 per unit. Purchase 1 was 310 units at $7 per unit. Purchase 2 was 490 units at $8 per unit. Required: a. Assume the periodic inventory system is used. Calculate cost of goods sold and ending inventory using FIFO method. (Enter all values as a positive value.) Periodic FIFO Cost of Goods Available for Sale Cost of Goods Sold Beg. Inventory Purchases: Purchase 1 Purchase 2 # of units Cost per unit Cost of Goods Available for Sale # of units sold Cost per unit Cost of Goods Sold # of units In ending Inventory Inventory Balance Cost per unit Ending Inventory Total b. Assume the periodic inventory system is used. Calculate cost of goods sold and ending inventory using LIFO method. (Enter all values as a positive value.) Cost of Goods Available for Sale Cost of Goods Sold Periodic LIFO Inventory Balance # of units Cost per Cost of Goods Available for # of units unit sold Cost per unit Cost of Goods Sold Sale # of units in ending inventory Cost per unit Ending Inventory Beg. Inventory Purchases: Purchase 1 Purchase 2 Total