Illustration: In an establishment, the co-efficient of variation of wages of male and female workers were 55% and 70% respectively. The standard deviations are Dollar 22.00 and 15.40 respectively....

Extracted text: Illustration: In an establishment, the co-efficient of variation of wages of male and female workers were 55% and 70% respectively. The standard deviations are Dollar 22.00 and 15.40 respectively. Calculate the combined average wages of all the workers if 80% of the workers were males.