Causwell Company began 2021 with 12,000 units of inventory on hand. The cost of each unit was $5.00. During 2021 an additional 32,000 units were purchased at a single unit cost, and 22,000 units remained on hand at the end of 2021 (22,000 units therefore were sold during 2021). Causwell uses a periodic inventory system. Cost of goods sold for 2021, applying the average cost method, is $118,800. The company is interested in determining what cost of goods sold would have been if the FIFO or LIFO methods were used. Required:
a. Determine the cost of goods sold for 2018 using the FIFO method.
b. Determine the cost of goods sold for 2018 using the LIFO method.