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 10 $100 $1,000 Sept. 12 Purchases 47 103 4,841 Sept. 19 Purchases 49 104 5,096 Sept. 26 Purchases 25 105 2,625 Totals 131 $13,562 Additional data regarding the company's sales of snowboards are provided below. Assume that REI uses a perpetual inventory system. Date Units Sept. 5 Sept. 16 Sale 7 Sale 49 Sept. 29 Sale 45 Totals 101