一台电脑现价比原价降低电脑辐射了九分之二，是把...

来源：蜘蛛抓取(WebSpider) 时间：2011-09-18 04:33 标签： 降低电脑辐射
一台电脑现价比原价降低了20%是在什么看作单位一现价是原价的一件多少等于多
黎约圣殿1787
降低了20%就是相当于现在的价格为100%-20%＝80%,比如电脑原价是1000元,那么这台电脑降价后的价格就是：1000*（1-0.2）＝800元也就是现在的价格是原价的0.8倍（原价乖以80%）.
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