There are three departments (H.R., Sales & Finance) in company Z. The ratio of males to females in H.R. is 7 : 10 7:10 7 : 10 . The number of fema...

There are three departments (H.R., Sales & Finance) in company Z. The ratio of males to females in H.R. is $7:10$. The number of females in Finance is $20$ more than the number of females in H.R. The number of males in Finance is 6 more than the number of females in Finance. The average number of males across all departments is 39, and the number of males in Sales is 35. The number of females in Sales is $25$ more than the number of females in Finance.

The number of males and females in the Marketing department is $40$ and $20$ more than the number of males and females in the Sales department respectively. What is the total number of employees in the Marketing department?