at the end of the year. and (B) LIFO? year EX 6-8 Weighted average cost flow method under perpetual inventory system fgoods The following units of a particular item were available for sale during the calendar 58,750 Jan. Mar. May Aug Oct 1 18 2 9 20 Inventory Sale Purchase Sale Purchase 10,000 units at $75.00 8,000 units 18,000 units at $77.50 15,000 units 7,000 units at $80.25 W ME HOW Determine the cost of goods sold for each sale and the inventory balance after each sale. Pre The firm uses the weighted average cost method with a perpetual inventory sy ent the data in the form illustrated in Exhibit 5