REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 100 snowboards were sold. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 10 $111 $1,110 Sept. 12 Purchases 46 114 5,244 Sept. 19 Purchases 49 115 5,635 Sept. 26 Purchases 25 116 2,900 Totals 130. $14,889 Additional data regarding the company's sales of snowboards are provided below. Assume that REI uses a perpetual inventory system. Date Units Sept. 5 Sale 8 Sept. 16 Sale 47 Sept. 29 Sale 45 Totals 100