each sale. Present the dat Weighted average cost flow method under perpetual inventory syste The following units of a particular item were available for sale during the calenu EX 7-9 7.9 yea Jan. Inventory Apr. 19 June 30 Sept. 2 Sale Nov. 15 4,000 units at $20 2,500 units 6,000 units at $24 4,500 units 1,000 units at $25 Sale Purchase Purchase The firm uses the weighted average cost method with a perpetual inventory Determine the cost of merchandise sold for each sale and the inventory balance se each sale. Present the data in the form illustrated in Exhibit 5. EX 7-10 Perpetual inventory using FIFO Assume that the business in Exercise 7.9 maintains a perpetual inventory system. OBJ.3 mine the cost of merchandise sold for each sale and the inventory balance after assuming the first- in, first-out method. Present the data in the form illustrated in Exhibit