The Dell Company uses a perpetual inventory system. The purchases & Sales made by the company during the month of September, 2018 are given below: Required: Compute inventory on September 30, 2018 and cost of goods sold for the month of September using following inventory costing methods: A) Last in, first out (LIFO) method B) Average cost method

1-September Purchase 220 units @ $120 6-September Sold 100 units @ $140 8- September Purchase 30 units @ $125 10 September Sold 55 units @ $135 16- September Purchase 20 units @ $140 20- September Purchase 30 units @ $150 25- September Sold 24 units @ $110