Conditional Probability of University Graduates Owning Cars

In a certain city, it is known that 70% of the residents own a car. Given that a resident is a university graduate, the probability that they own a car increases to 90%. Conversely, if a resident does not own a car, the probability that they are a university graduate is 20%. If you randomly select a resident from this city, what is the probability that they are a university graduate given that they own a car?