Question

You can take Bus 65 or Bus 79. You take the first bus that arrives. The probability that Bus 65 arrives first is 75%. There is a 40% chance that Bus 65 picks up passengers along the way. There is a 60% chance that Bus 79 picks up passengers. Your bus picked up passengers. What is the probability that it was Bus 65?

Answer 1

I know the answer, but not how to get it... it's in my textbook.

Answer 2

@rational

Answer 3

whats the answer to start with?

Answer 4

it's 2/3

Answer 5

that's what it says in the back of the book, but I have no idea what to do.