Delmott sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Below is information relating to Delmotts purchases of Xpert snowboards during September. During the same month, 101 Xpert snowboards were sold. Delmott uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 15 $113 $ 1,695 Sept. 12 Purchases 43 117 5,031 Sept. 19 Purchases 50 119 5,950 Sept. 26 Purchases 20 122 2,440 Totals 128 $15,116