标题: PREP一道数学DS题求解 [打印本页] 作者: mcxd 时间: 2009-11-17 22:48 标题: PREP一道数学DS题求解 Each person in a certain group supports only one of the two candidates R and T. Of the people in the group, 45 percent support Candidate R and the rest support Candidate T. How many people in the group are in favor of a flat tax?
(1) Of the people in the group who support Candidate R, 58 percent are in favor of a flat tax.
(2) the people in the group who support Candidate T, 22 are in favor of a flat tax.