Perpetual Inventory Using FIFO Beginning inventory, purchases, and sales for Item PK95 are as follows: Assuming a perpetual inventory system and using the first-in, first-out (FIFO) method, determine (a) the cost of merchandise sold on January 25 and (b) the inventory on January 31. Perpetual Inventory Using FIFO Beginning inventory, purchases, and sales for Item PK95 are as follows: Assuming a perpetual inventory system and using the first-in, first-out (FIFO) method, determine (a) the cost of merchandise sold on January 25 and (b) the inventory on January 31