Probability.. HELP!

At a certain hospital, 40 patients have lung cancer, 30 patients smoke, and 25 have lung cancer and smoke. Suppose the hospital contains 200 patients. If a patient chosen at random is known to smoke, what is the probability of the event that the patient has lung cancer?

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  1. Pr(smoke, lc)=30/200* (25/40)

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    bobpursley

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