Re: [計量] In Town X, 64 percent of the ...
看板GRE (GRE入學考試)作者ELASTOMER (惡性循環........)時間17年前 (2008/10/31 10:43)推噓0(0推 0噓 1→)留言1則, 1人參與討論串2/3 (看更多)
※ 引述《gingerginger (ginger never tender)》之銘言：
: In Town X, 64 percent of the population are employed,
: and 48 percent of the population are employed males.
: What percent of the employed people in Town are females?
: (A)16%
: (B)25%
: (C)32%
: (D)40%
: (E)52%
: The answer is (B)
: 但是以我了解文意的感覺我算出來是(E)
假設Town X 有y人,employed population=0.64y
0.64y-0.48y/0.64y=0.25
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