Probability Part 3

Bag A contains 9 white and 8 black balls, while bag B contains 6 white and 4 black balls. One ball is randomly picked up from the bag B and mixed up with the balls in the bag A. Then a ball is randomly drawn from the bag A . If the probability, that the ball drawn is white, is ‌

p

q

,gcd(p,q)=1, then p+q is equal to