Paul needs to pay annual property taxes. they are 11,500 annually for a lake house. property taxes are 7,325 for a town house, and 3,455 for a shack. paul owns one shack, three town houses, and one lake house. how much are the total property taxes for all of pauls houses?

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?