Scrappers Supplies tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each period, as if it uses a periodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31.

1) Compute the cost of goods available for sale, cost of ending inventory, and cost of goods sold at December 31 under each of the following inventory costing methods

Transactions Units Unit Cost 180 $28 Beginning inventory, January 1 Transactions during the year: 290 30 a. Purchase on account, March 2 (330) b. Cash sale, April 1 ($44 each) 230 34 c. Purchase on account, June 30 (55) d. Cash sale, August 1 ($44 each)