在我们的生活中,经常看到商店、超市、专卖店等关于商品处理的信息,这种信息中有一些蕴含“每增加(或降低),就降低(或增加)”类问题,我们姑且称之谓“每每”问题,这是一种源于生活实际的问题,常常成为中考命题的素材之一.对于这类问题可借助表格来分析,它能帮助我们很快理清问题中的数量关系.下面以中考题为例加以说明.例1(2013·淮安)小丽为校合唱队购买某种服装时,商店经理给出了如下优惠条 In our lives, we often see information about the handling of goods in stores, supermarkets and specialty stores. Some of this information implies that the “lower (or increase) Let us call it the ”every" problem, which is derived from the actual problems of life, often become one of the elements of the senior high school entrance examination questions. For such problems can be analyzed using the form, it can help us quickly sort out the problem Example 1 (2013 · Huaian) When Mary purchased a certain costume for the school choir, the shop manager gave the following discount coupon