Problem 6-18A Alternative cost flows-periodic LOS Synergy Company began 2020 with 19,500 units of Product X in its inventory that cost $760 per unit, and it made successive purchases of the product as follows: Mar. May Aug. NOV. 7 26,500 units @ $ 9.10 each 25 31,500 units @ $11.10 each 2 22,000 units $12.10 each 10 31,500 units @ $ 13.60 each The company uses a periodic Inventory system. On December 31, 2020, a physical count disclosed that 15,500 units of Product remained in inventory