In a survey of Canadian workers who worked more than 50 hours per week, it was found

Question:

In a survey of Canadian workers who worked more than 50 hours per week, it was found that 334 workers surveyed were under 35 years of age and 401 workers were 35 to 55 years old. If one worker from this survey is selected at random, what is the probability that she or he is 35 years or older? Based on this result, are workers slowing down as they get older?