Two stocks A and B are known to be related in that both are in the same

Question:

Two A and B are known to be related in that both are in the same industry. The probability that stock A will go up in price tomorrow is 0.20, and the probability that both A and B will go up tomorrow is 0.12. Suppose that tomorrow you find that stock A did go up in price. What is the probability that stock B went up as well?
Stocks
Stocks or shares are generally equity instruments that provide the largest source of raising funds in any public or private listed company's. The instruments are issued on a stock exchange from where a large number of general public who are willing...