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题库 / GMATLA-DS-68
In a survey of 200 college graduates, 30 percent said they had received student loans during their college careers, and 40 percent said they had received scholarships. What percent of those surveyed said that they had received neither student loans nor scholarships during their college careers?
(1) 25 percent of those surveyed said that they had received scholarships but no loans.
(2) 50 percent of those surveyed who said that they had received loans also said that they had received scholarships.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
50 percent of those surveyed who said that they had received loans 看清楚限定词
第二个选项不对吧
画韦恩图。设二个都没有的是n，只拿贷款的是l，只拿奖学金的是s，两者都拿的是d。根据题干可列出n+l+d+s=200; l+d=0.3*200; s+d=0.4*200
(1)s=0.25*200, 知道了s，可以求出d，知道了d可以求出l，那么l,d,s都知道了，n就出来了
(2)d=0.5l,与 l+d=0.3*200联立可以求出d和l，再求出s，n就出来了
50 percent of those surveyed who said that they had received loans also said that they had received scholarships.those的定语是 surveyed和 who said that they had received loans，50%的收到了贷款的人也收到了奖学金=既收到贷款又收到奖学金的人是收到贷款的人的50%
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这个第二个条件说不通吧，怎么会既拿loan又拿奖金是50%，可是说拿loan和说拿奖金的是30%、40%。。。。最后neither的反而是80%？？？？