11) S'well manufactures and sells high quality, insulated water bottles made of stainless steel, in many fun colors and designs. S'well sells its water bottles to retail stores such as high-end supermarkets, department, sporting goods, and clothing stores. You have the following information: Retail stores sell a 17 ounce S'well water bottle to consumers for $30 The retail stores' gross margin on selling price is 45% S'well's gross margin on cost is 55% The retail stores' COGS is the same as S'well's selling price to the stores. Please calculate the following - you do not need to calculate in this order, but label each answer. Please show all work. (2 pts. each, 6 pts. total). a) The retailer stores' cost of goods sold (COGS) b) S'well's cost of goods sold (COGS) c) S'well's gross margin on selling price