1. The problem statement, all variables and given/known data In order to be employed by a particular company, the interviewee has to attend one of two examination A and B and pass the exam. According to past experience, probability of passing examination A is 2/5 and that of B is 1/4. The ratio of interviewee attending examination A and B is 3:2 Given that the interviewee is employed by the company, what is the probability of he passing examination A? 2. Relevant equations 3. The attempt at a solution No ideas at all. I always fear "given"