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OpenStudy (anonymous):
Kim has a strong first serve; whenever it is good (that is, in) she wins the point 85% of the time. Whenever her second serve is good, she wins the point 40% of the time. Seventy percent of her first serves and 85% of her second serve are good. What is the probability that Kim wins the point win she serves?
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OpenStudy (tkhunny):
Did you draw a tree? Did you consider changing your demeaning screen name?
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