如何用代数解决这个问题？

youdontknowme · 发表于 2016-7-9 00:44:51

Manhattan里有一题，通过他们建议的方式似乎非常简单。可是如果用代数方式如何解决呢？就是带入xyz。请大虾指教

A researcher estimates that 10% of the children in the world are between the ages of 8~18 and dislike soccer, and that 50% of the children who like soccer are between the ages of 8 and 18. If 40% of the children in the worlds are between the ages of 8~18, what percentage of children in the world are under age 8 and dislike the game of soccer? (All children are between the ages of 0~18)

emmahiggins09 · 发表于 2016-7-9 08:20:42

楼主画个韦恩表格不就行了么，横向 like, dislike, total ；纵向 8-18 , 小于8 , total

youdontknowme · 发表于 2016-7-10 07:16:48

是啊，那就是书的方式。可是如果使用代数解法如何做呢？

如何用代数解决这个问题？

所属分类: GMAT考试

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