GMAT
Finding of a survey of Systems magazine subscribers: Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.For both of the findings to be accurate, which of the following must be true?
【选项】Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.
题目基本信息