Shamrock, Inc. sells a snowboard, E2slide, that is popular with snowboard enthusiasts. Below is information relating to Shamrock, Inc.'s purchases of EZslide snowboards d September. During the same month, 100 EZslide snowboards were sold. Date Sept. Sept. 12 1 Explanation Inventory Units 10 Unit Cost Total Cost $111 $1,110 Purchases 461 114 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 EZslide snowboards are provided below. Assume that Shamrock, Inc. uses a perpetual inventory system. Date Units Sept. 5 Sale 8 Sept. 16 Sale 47 Sept. 29 Sale 45 Totals 100