没有找到前人讨论的,不知道是不是这个题太白痴咯,不过我就是想不通呜~~ Q37: Of the mutual funds on a “select list,” 1/3 have 5-star ratings, and 2/5 of the remaining funds have 4-star ratings. If the remaining 300 funds on the list have 3-star ratings, how many funds are on the list?
A. 500 B. 750 C. 1,000 D. 1,200 E. 1,500 答案选B...可我是这样算的:1/3*3/5*x=300,不知道有没有理解错题意? |