#### Question

The mean salary of 20 workers is Rs.10,250. If the salary of office superintendent is added, the mean will increase by Rs.750. Find the salary of the office superintendent.

#### Solution

We have,

The mean salary of 20 workers is Rs.10,250.

The sum of salary of 20 workers = 10250 x 20 = Rs. 205000

Since, the mean will increase by Rs.750 if the salary of office superintendent is added

⇒The mean salary of 21 workers including office superintendent = 10250 + 750 = Rs. 11000

The sum of salary of 21 workers including office superintendent = 11000 x 21 = Rs. 231000

So, the salary of the office superintendent = 231000 - 205000 = Rs. 26000.

Is there an error in this question or solution?

Solution The Mean Salary of 20 Workers is Rs.10,250. If the Salary of Office Superintendent is Added, the Mean Will Increase by Rs.750. Find the Salary of the Office Superintendent. Concept: Measures of Central Tendency.