SOLUTION: I have absolutely no clue how to do this problem and I've tried it a number of ways. In the US the probability of living at least 60 years is 88% and the probability of living at

Question 420114: I have absolutely no clue how to do this problem and I've tried it a number of ways.
In the US the probability of living at least 60 years is 88% and the probability of living at least 80 years is 55.5%. Find the probability of living at least 80 years given that the person is already 60.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In the US the probability of living at least 60 years is 88% and the probability of living at least 80 years is 55.5%.
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Find the probability of living at least 80 years given that the person is already 60.
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P(80 | 60) = P(80 and 60)/P(60) = P(80)/P(60) = 0.555/0.60 = 0.925
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Cheers,
Stan H.

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