Who has YT channel I will sub

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

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?

X-10/4 when x = –18 a 7 b –2 c –7 d 2