Write the fractional equivalent (in reduced form) to each number. 0.3 0.125 0.16 0.1 0.6 0.2 0.75

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?