问题 解答题

某厂在“五一”前准备给92名工人每人发一套工作服.有三个商场的服装款式和价格都比较符合厂方要求.每套服装定价320元.三个商家优惠情况如下:甲商家对一次购买50套以的顾客打七五折优惠;乙商家用“买十送三”的方法促销;丙商家则用“买四送一”吸引顾客.请你先估算一下,看到哪家商场购买比较便宜.简要写出你估算的方法和依据.然后再通过精确计算,看看你的估算是否正确.

答案

甲:92×320×75%=22080(元),

乙:买70台,就送3×7=21台,再多买一台就是70+21+1=92(台),

即买71台即可:71×320=22720(元),

丙:买72台,送72÷4=18台,72+18=90台,再多买2台,就是92台,

即买72+2=74台,需要花费74×320=23680(元),

22080<22720<23680,

所以在甲商场买比较便宜.

阅读理解

阅读理解。

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