Joseph has been diagnosed as having a mental illness.According to Canadian statistics,what is the likelihood that he could also be diagnosed with a substance abuse problem?

Question

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According to Canadian statistics, individuals with mental illness are three times more likely to have a substance abuse problem. Therefore, the likelihood of Joseph having a substance abuse problem is 30 percent (which is three times the general population's likelihood of 10 percent).

Joseph Has Been Diagnosed as Having a Mental Illness