Factor Percent of Respondents User-friendly 56% Fast response time 48% Bargain prices 42% The table gives three factors to be considered when choosing an Internet service provider and the percent of the 1,200 respondents to a survey who cited that factor as important. If 30 percent of the respondents cited both “user-friendly” and “fast response time,” what is the maximum possible number of respondents who cited “bargain prices,” but neither “user-friendly” nor “fast response time?” A. 312 B. 336 C. 360 D. 384 E. 420
我想问一下，为什么不能以42-26-18这么做。 | 
