Periodic inventory systems Tres Chic us product, and the purchases during the current year, were as follows: 2. es a periodic inventory system. The beginning inventory of a particular Jan I 1,000 units@ $1400 $14,000 1,050 units@$1450 15225 950 units@$15.00 14,250 500units@$15.75: 7.875 $51.350 Beginning inventory Mar9 Purchase Aug 11 Purchase Dec 23 Purchase. Total available for sale in ye at.s At December 31, the ending inventory of this product consisted of 850 units. Determine the cost of the year-end inventory and the cost of goods sold for this product under each of the following methods of inventory valuati (Rounded) Inventory at Cost of Dec. 31 Goods Sold (a) Average cost (b) First-in, first-out c Last in, first-out