jacky
这道题应该从两个角度考虑。先是顾客买鞋给了100元，到去临铺换钱的这个阶段内，王小姐是没有收益没有亏损的，也就相当于是顾客去换钱了。然后发现是假的，赔了100元就是亏了100元。然后，鞋的进价是45元，甩卖30元，那就是亏了15元。加在一起就是赔了115元。/iknow-pic.cdn.bcebos.com/f31fbe096b63f624dc6088f38b44ebf81a4ca305"target="_blank">/iknow-pic.cdn.bcebos.com/f31fbe096b63f624dc6088f38b44ebf81a4ca305?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"wqktp="https://iknow-pic.cdn.bcebos.com/f31fbe096b63f624dc6088f38b44ebf81a4ca305"/>
