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. --------------------------------------------------------------------------------------------------------------------------------------------------------【答案】A
【思路】(1) total（1400) x =588(參加人數） , 588 x women比例50/100=參加女人的比例, 充份 (2)原題問surveyed werer women , 包含 engage 和 not engage , so we only can get engage women , 不充份
應該選C吧? A也不充分啊不是嗎?? 紅色部份那裡不是把題目理解錯了嗎? 我是理解成題目是說women的50% considered engaging哦...
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发表于 2011-7-30 00:05:07
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