prep1-23

berylgirls

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。

himba

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

berylgirls

谢谢，明白了。

羽依依

解释的太好了 ！