Shamrock, Inc. sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Shamrock, Inc.'s purchases of Ezslide snowboards during September. During the same month, 100 EZslide snowboards were sold. Date Sept. 1 Sept. 12 Explanation Units Unit Cost Total Cost Inventory 10 $111 $1,110 Purchases a 46 114 5,244 Sept. 10 Sept. 26 Purchases 49 115 5,035 Purchases 25 116 2,900 Totals 130 $14,889 Additional data regarding the company's sales of EZslide snowboards are provided below. Assume that Shamrock, Inc. uses a perpetual inventory system. Units Date Sept. 5 Sale Sept. 16 Sale Sept. 29 Sale 45 Totals 100