prep1-23

liuqiangde

At least 100 students at a certain high school study Japanese. If 4 percent of the students at the school who study French also study Japanese, do more students at the school study French than Japanese?

 

(1)  16 students at the school study both French and Japanese.

 

(2)  10 percent of the students at the school who study Japanese also study French.

答案是B

在讨论区看了一下，还是没看明白。

主要一点是4 percent of the students at the school who study French also study Japanese怎么翻译，如果翻译成有4%的在校学生既学习法语，又学习日语，那么第二个条件就可以翻译成10%的在校学生既学习法语，又学习日语，这样是矛盾的。

但是如果这句翻译成学习法语的学生有4%也学习日语，那么根据第一个条件，共有16个学生既学习法语，又学习日语，可以算出学法语共400人。那答案就应该是D。

请大家帮忙看看，谢谢。

scutpigus

这个题目需要好好读题：

At least 100 students at a certain high school study Japanese. If 4 percent of the students at the school who study French also study Japanese, do more students at the school study French than Japanese?至少100个学生学日语。如果学法语的学生中有4%也学习日语的，问学法语的学生比学日语多？

(1)  16 students at the school study both French and Japanese.

16个既学法又学日

(2)  10 percent of the students at the school who study Japanese also study French.
学日语学生中有10%的学生也学法语的

From 1, 16个既学法又学日，得16/0.04=400人学法语, 但 "at least 100 students study Japanese", insufficient.

From 2, 题意得 10% 的日语学习者=4% 法语学习者，所以学法语的学生〉学日语的

Answer is B

liuqiangde

谢谢，明白了。

SJMWYZ

解释的太好了 ！

hytulip

如果这种类型的题，最后得出的结果是“学法语的学生<学日语的" 算sufficient吗？