Can anyone provide a step-by-step breakdown of how to answer this question?

It is estimated that 25% of all California adults are college graduates and that 30% of California adults are regular intemet users. It is also estimated that 20% of California adults are both college graduates and regular intemet users. Answer the questions below. {If necessary, consult a list of formulas.) (a) Among California adults, what is the probability that a randomly chosen 9 internet user is a college graduate? Round your answer to 2 decimal places. X 8 . I (b) What is the probability that a California adult is an internet user, given that he or she is a college graduate? Round your answer to 2 decimal places