Sales during the year were 540 units. Beginning inventory was 210 units at a cost of $4 per unit. Purchase 1 was 270 units at $5 per unit. Purchase 2 was 430 units at $6 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 # 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 Beg. Inventory Purchases. Purchase 1 Purchase 2 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.) Periodic LIFO Cost of Goods Available for Sale Cost of Goods Sold # 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 Beg. Inventory Purchases: Purchase 1 Purchase 2 Total