A

问题如下：

As from the record of CFA Institute and GARP, the passthrough rate of CFA level I exam is 40%, and the passthrough rate of FRM exam is 50%. And as an investigation led by the two institutes, among the people who has passed the FRM, the passthrough rate of CFA level 1 exams is 60%. So what is the passthrough rate of FRM members who has also passed the CFA level 1 exam before?

选项：

A.

48%

B.

60%

C.

75%

解释：

P(CFA I|FRM) =60%, P(FRM)=50%

P(CFA I and FRM)= P(CFA I|FRM) × P(FRM) = 60% × 50% = 30%