PR 6-2B LIFO perpetual inventory OBJ.2,3 08J, The beginning inventory for Dunne Co. and data on purchases and sales for a three-month period are shown in Problem 6-1B. Instructions Record the inventory, purchases, and cost of merchandise sold data in a perpetual inventory record similar to the one illustrated in Exhibit 5, using the last-in, first-out method. 2. Determine the total sales, the total cost of merchandise sold, and the gross profit from sales for the period. 3. Determine the ending inventory cost on June 30, 2016