Blossom Co. began operations on July 1. It uses a perpetual inventory system. During July, the company had the following purchases and sales. Average cost for each unit July 1.$120 July 6$120 July 11$130 July 14$130 July 21 141 July 27 141 Blossom Co. began operations on July 1. It uses a perpetual inventory system. During July, the company had the following purchases and sales. Average cost for each unit July 1.$120 July 6$120 July 11$130 July 14$130 July 21 141 July 27 141