An individual store buys 15 pieces of a certain commodity at a price of 10 yuan each on the first day, and buys 35 pieces of the same commodity at a price of 12 yuan each on the second day, and then sells them at the same price. When selling these goods, at least 10% of the profit is required. What is the minimum selling price of each piece of this kind of goods?
某个体商店第一天以每件10元的价格购进某种商品15件，第二天又以每件12元的价格购进同种商品35件，然后以相同的价格卖出，如果商店销售这些商品时，至少要求获得10%的利润，这种商品每件最低销售价是多少？
<result>12.54</result>