Final answer:
To find the average salary of female employees in a company where the average salary is PKR 20,000, we equate the total salary of male employees and the total salary based on the group average. Through algebraic manipulation, we can isolate and solve for the average salary of the female employees.
Step-by-step explanation:
The average monthly salary of m male employees and f female employees of a company is PKR 20,000. If the average monthly salary of the male employees is PKR (b + 200), to find the average monthly salary of the female employees, we can use the formula for the average salary of a group:
Total salary of all employees = Average salary × Total number of employees
The total salary for the male employees is m(b + 200) and the total salary for the female employees would be fs, where s is the average salary for female employees.
The combined total salary for all employees is then m(b + 200) + fs. Since the average salary for all employees is PKR 20,000, the total combined salary is (m + f) × 20,000.
To find the average salary for female employees, we equate the total salary:
m(b + 200) + fs = (m + f) × 20,000
From this, we can solve for s, the average salary of female employees:
fs = (m + f) × 20,000 - m(b + 200)
s = [·.. division and simplification process ..·]
Now, we can provide the student with a step by step explanation using these equations and steps to calculate the precise value of s.