Question

the mean salary of 20 workers is 10,250 rupees, if the salary of office superintendent is added to the main will increase by rupees 750. find the salary of office superintendent.

Answer 1

Mean salary of 20 workers = 10250

Considering salary of each worker = 10250

Let salary of superintendent be X

New mean satary will be = [20(10250) + X]/21

It is given that new mean salary = 10250 + 750 = 11000

[20(10250) + X]/21 = 11000

X = 11000*21 - 20*10250

X = 231000 - 205000

X = 26000

Salary of superintendent = 26000

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