Study the given information and answer the questions that follow.

In companies A and B, the total number of employees is 3600. The ratio of the number 0', employees in A to that in B is 5 : 7. Each employee works in only one of the departments P. Q and R of the company. In company A, 60% of the total employees are males and the rest are females, whereas in company B, the ratio of males to females is 4 : 3.

In company A, 30% of the total female employees work in department Q, 20% of the remaining work in department R, and the rest in department P. Out of the total male employees in company A, 40% work in department P, $$\frac{2}{9}$$ of the remaining in department Q, and the remaining in department R.

In company B, one-third of the male employees work in department R. The number of male employees working in department P is 25% more than that working in department R. Out of the female employees in company B. 60% work in department P. The number of female employees in company B working in department Q is 90 more than the number of female employees in R.