※ 引述《freemind99 (freemind99)》之铭言： : 165. 16466-!-item-!-187;#058&010795 : Of the 1,400 college teachers surveyed, 42 percent said that they considered : engaging in research an essential goal. How many of the college teachers : surveyed were women? : (1) In the survey, 36 percent of the men and 50 percent of the women said : that they considered engaging in research an essential goal. : (2) In the survey, 288 men said that they considered engaging in research an : essential goal. : Ans: A : 我看pp详解上 是用1400x42%x50%算出答案 : 可是我有个疑问 : 如果是用42%里面的人去算女性的人数 : 那扣除36%(男性) 50%(女性) 以外剩下的14%是属於哪种人比例???? : 感觉上好像怪怪的.... (1)36%的男生saidthat they considered engaging in research an essential goal 50%的女生saidthat they considered engaging in research an essential goal 设男生人数X人 女生人数为(1400-X)人 1400x0.42=588 0.36X + 0.5(1400-X) = 588 X=800 1400-800=600 女生人数为600人 -- 传说中的包子 (￣ー￣；) http://www.wretch.cc/album/niinii --

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