Question

Let A and B be two events in a sample space S such that P(A) = .6 and p(B l A) =.5. Find P (A∩B).

Well, I know that that should start off by finding P(A l B)
which is found using the formula P(A∩B)/ P(B) but I am not given P(B) here so I don't know what to do.

Answer 1

Or wait.. I might be getting the formulas mixed up. I think I must multiply P(A) by P(B l A) right?

Answer 2

For P(A∩B)?

Answer 3

0.3 that is my final answer.