A total of 3000 workers at a particular industry were asked whether they had a history of hypertension or not at the beginning of their employment. Of the 3000, 60% were males, 40% were 40-50 years of age and 60% were above the age of 50 years. Of the 3000 workers, 600 reported a history of hypertension. Of the 600 cases of hypertension, 30% were males and 70% were above 50 years of age.

Calculate the age-specific prevalence of hypertension in workers 40-50 years of age and workers > 50 years old?