According to a recent survey of SA households, the probability that the residents of a household own two cars if their annual household income is over Rs. 1,50,000 is 60%. Of the households surveyed, 60% had incomes over Rs. 1,50,000 and 70% had two cars. What is the probability that the residents of a household own two cars and have an annual household income of over Rs. 1,50,000?