Your parents gave you 200 to spend on a weeklong school trip

If you could answer these your a life saver

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Express -5 2/5 as an improper fraction.