REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 101 snowboards were sold. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 13 $115 $1,495 Sept. 12 Purchases 44 118 5,192 Sept. 19 Purchases 49 119 5,831 Sept. 26 Purchases 25 120 3,000 Totals 131 $15,518 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 7 Sept. 16 Sale 49 Sept. 29 Sale 45 Totals 101