on a certain sight-seeing tour,the ratio of the number of women to the number of children was 5 to 2,what was the number of men on the sight-seeing tour? 1.on the sight seeing tour the ratio of the number of chilren to the number of men was 5 to 11 2.the number of women on the sight seeing tour was less than 30答案是c不理解求指点。。。
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发表于 2011-5-13 17:57:20
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