307 疑问

songxuebest · 发表于 2010-8-14 17:47:03

307PS: In a research, 15% of the plants developed fungus and died, 40% of the plants who developed fungus but not died, what is the percentage of the plants developed fungus?
A. 25%
B. 27%
C. 35%
D. 40%
E. 55%

就选E吗有这么简单？

carnice · 发表于 2010-8-14 18:19:31

前几天记得有个帖子是说25%来着，求解答~~~~

Gypsin · 发表于 2010-8-15 10:58:05

15% / (1-40%) = 25%

307 疑问

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