randall recorded 8 songs on his most recent CD the total length of the CD is 49 minutes find a unit rate to represent the average length per song on the CD round to the nearest hundredth

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?