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标题: [求助]大家谁帮我看看阿~OG一道数学题 [打印本页]

作者: heilonghrb11 时间: 2008-3-29 12:59 标题: [求助]大家谁帮我看看阿~OG一道数学题

Of the 230 single-family homes built in City X last year, how many were occupied at the end of the year?

(1)Of all single-family homes in City X,90 percent were occupied at the end of last year.
(2)A total of 7200 single-family homes in City X were occupied at the end of last year.

作者: songyeonpp 时间: 2008-3-29 18:47

去年建的230間single-family，今年有多少被使用!?

1、全部的（包括去年的）有百分之九十被使用→不清楚

2、總共有7200間（包括230間的）被使用→不清楚

1+2 還是不清楚!!!

作者: heilonghrb11 时间: 2008-3-31 06:57

赫赫~我明白啦~

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