Perpetual Inventory Using FF Beginning inventory. Durchases, and sales for tem e as follows: January 1 Inventory 55 units 516 9 Sale 45 units 13 Purchase 4 units 519 25 Sale 15 units Assuming a perpetual inventory and in the first first-out (Foto determine (a) the cost of merchandise sold on 25 and (b) the inventory on lauary 31 a. Cost of merchandise sold on January 25 b. Inventory on January 31 TO 2. When the FIFO method wind. Custs are induced in cost of inerchandise sold in the order in which they were purch. Think of your inventory in terms of uw much remains from each year each sale b. The ending story is made up of the most recent purchase