Final answer:
The exact figure for Canadian adolescents and adults reporting symptoms consistent with a mental disorder is not given in the references. It is suggested that mental health issues are common, with 75% of a surveyed student group reporting mental health issues.
Step-by-step explanation:
The number of Canadian adolescents and adults who reported symptoms consistent with a diagnosis of a mental disorder is not explicitly provided in the provided reference information. However, based on the data about mental health issues from various sources, it can be inferred that such rates can vary widely. In a similar context, a survey about a different health issue showed that 75 percent of 250 students reported having mental health issues at some point in their life. While this does not directly answer the question about Canadian statistics, it highlights the prevalence of mental health concerns among certain surveyed groups.