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The November 2012 Presidential Election had Barack Obama and Mitt Romney as the 2 major candidates....

The November 2012 Presidential Election had Barack Obama and Mitt Romney as the 2 major candidates. Suppose that 2/3 of the people in the city supported Obama but 5/9 of the people in the suburbs supported Romney. 60% of the people live in the city while 40% of the people live in the suburbs. If you select a random Obama supporter, what is the probability that this person lives in the city?

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