7-9 Weighted average cost flow method under perpetual inventory system The following units of a particular item were available for sale during the calendar OBJ.3 EX Jan. 1 Apr. 19 Sale June 30 Purchase 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 Inventory Purchase The firm uses the weighted average cost method with a perpetual inventory system. Determine the cost of merchandise sold for each sale and the inventory balance after each sale. Present the data in the form illustrated in Exhibit 5. x7-10 Perpetual inventory using FIFO OBJ.3 Assume that the business in Exercise 7-9 maintains a perpetual inventory system. Deter- mine the cost of merchandise sold for each sale and the inventory balance after each sale assuming the first-in, first-out method. Present the data in the form illustrated in Exhibit 3. Perpetual inventory using LIFO EX7-11 Assume that the business in Exercise 7-9 maintains a perpetual inventory system. Deter mine the cost of merchandise sold for each sale and the inventory balance after each sale assuming the last-in, first-out method. Present the data in the form illustrated in Exhibit 4 OBJ.3