Question

the mean monthly salary of 500 employees of a company is 5000. the mean monthly salary of male and female is 5200 and 4200 respectively. find the number of employee in a company

Answer 1

Total workers = 500

total salary = 5000 x 500 = 2500000 -----(1)

female = a

male = 500 - a

tatal salary of male = 5200(500-a) = 2600000 - 5200a ......(2a)

Total salary of female = 4200a ........(2b)

2500000 = 2600000 - 5200a + 42000a

1000a = 100000

a = 100

Female = 100

Male = 400