求助！问一道新鲜狗狗~~

记忆钢琴

2. PS: 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%

mars0624

25%

Kisusis

同意11楼的解答。。
40% of the plants who developed fungus but not died ——如果是这样的表达，那么应该是指总体中的40%，即答案应是55%吧；若是表达得了F的群体中的40%，我觉得不应是连词“but”，而说“40% of the plants who developed fungus did not die ”比较好//看12楼的说法，题意应该是后者~

tlt00000

25 +1

boriswang520

15% of the plants developed fungus and died, 40% of the plants who developed fungus but not died

注意啊！ 第一个15%是总数的百分之15， 第二个是得了 F的40%， 所以答案是25%

破题定语好谓语搞死人了

wen0513

25% +1。今天碰到这个了……不记得原始用词但题目的意思是40% which developed the disease did not die.

psyche1989

40% of the plants who developed fungus but not died  这句话有歧义  不知道原题是不是表达清晰
如果是developed fungus 的群体中有40%死了， 那答案就是25%
如果是developed fungus 且 not died的是总体的40%，那么答案就是55%

草翅膀

翻译一下题目：在一项研究中，15%的植物长了真菌且死掉了，在长了真菌的植物中有40%没有死。求长真菌的植物比例。
应是25%

maggie520

答案是25%
died= 15% of plants = 60% of fungus (1-40%得出的)
所以fungus:plants=1:4 -->25%

wyzyuki

是不是因为
不得F就不会死，所以不能把得F和死亡当做两种不同属性来看……
看了3L我就想回去要就条件概率了。。。