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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 投票中
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 投票中 
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2題數學題目(急!)
Oct 16th 2013, 06:47

我不知道這題怎麼算,請大大幫個忙~                                                         問題如下:                                                                           土風舞表演男生和女生共有189人且男生人數對女生人數的比是5: 4 回答下面問題:                                    1.男女人數個是多少?                                 2.如果女生人數不變 且男生人數對女生人數的比變成4:3,男生要 增加多人? 謝謝囉!~   

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