Aclass trip was 234 miles away from the school. if the bus driver drove at a constant speed of 70 mph, about how long did the trip take? a. 3 hours 20 minutes b. 3 hours 56 minutes c. 3 hours 34 minutes d. 4 hours

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?