Urn 1 contains 3 red and ? white balls. Urn 2 contains 3 red and 6 white balls. A ball is draw from urn 1 and placed in urn 2. Then a ball is drawn from um 2. If the ball drawn from urn 2 is red. what is 1119 probability 1113! the ball drawn from urn 1 was red? The probability is :|. {Type an integer or decimal rounded ll] three decimal places as needed.)