Candy hearts were marked down from 30% to 50% on Valentine's Day. The following day, candy hearts were marked down an additional 25%. What was the lowest cost of a candy heart that originally sold for $28?
我的算法是28*(1-50%)* (1-25%)
为什么不对呢?
是不是我又理解错题目的意思了呢?
举报
我一开始也是这样算的,后来想想不对啊。
咱们商场打折卖东西的时候,都是从原价不断往下减的,很少有折上折的,对吧?
比如衣服鞋子,first sale的时候是30%,然后再变40%,最后clearance的时候可能就是60%的discount.这些都是根据原价来mark的。
所以这道题是28*(1-50%-25%)=7
Boys may not be familiar with those shopping stuffs.
啊啊,有道理啊~亏偶平时看到打折还那么起劲儿呢,怎么一做题就没常识了呢。。。
偶也是girl拉,因为偷懒用的GG的id呵呵。
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