Math, Probability

According to a survey of Australian households, the probability that annual household income is over $50,000 if the residents own 2 cars is 80%. Of the households surveyed, 60% had incomes over $50,000 and 70% had 2 cars. The probability that annual household income is over $50,000 if the residents of a household do not own 2 cars is?

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    posted by Meow

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