Ronnie bought 6 ice cream cones for himself and his friends. seventeen cents tax was added to the price of each cone. the total cost was $14.58. what was the price of a cone before tax?

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?