Comprehension Passage

The below line chart shows the number of employees (Male + Females) working in the five different companies P, Q, R, S and T.

अर्जित अंक

The below table shows the ratio between the number of (Males+ Females) working in five different companies P, Q, R, S and T.

Name of the company	Ratio between male to female employees working
P	2: 1
Q	4: 3
R	3: 2
S	4: 1
T	5: 3

Find the difference between the average number of male employees working in company R and S and the average number of female employees working in company S and T.