请教一道新机经

haiyi

A department has only two kinds of professor, some focus on Accounting, others focus on Financing. Ask in this department, professor who are doing consulting job is what percent of professor who are not doing the consulting job.
A)Half of Accounting professor doing consulting job.
B)Given the ratio of (Finance professor who are doing consulting job) to (Accounting professor who are not doing consulting job). 记不太清，很长！大概如此。）

从给的条件看我觉得答案为E, 不知各位大侠意见如何?

tongxun

E

sherry

C。只要求求比例

beagle

agree with c

比例关系可以用一个参数表示最后约掉

haiyi

设  Accounting professors 有A人，其中做 Consulting 的有1/2A人
Finance Professors 中有 KA人做Consulting(设k为两者系数）,  但不知道Finance Professor中未做Consulting人的情况， 不知比例法怎么求？

qiqi

我认为是E

linlin315

同意是E。