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标题: 怎么理解这道题题？ [打印本页]

作者: sunnysprin 时间: 2008-4-4 17:29
标题: 怎么理解这道题题？

23. 1653-!-item-!-187;#058&000843

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.

谢谢

作者: robert12463 时间: 2008-4-4 17:56

学日语又学法语语的人＝学英语又学法语的人＝4％of Students who study French=10%of students who study Japanese.

选B

作者: ttguoyufei 时间: 2008-4-4 18:01

条件1 16个学生学习2种用 16/4% 求出法语人数是400 但是不知道日语人数 i

insufficient

条件2 日语*10%=法语*4%

法语》日语

sufficient

[此贴子已经被作者于2008-4-4 21:54:04编辑过]

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