Question:
the mean of monthly salary of the 13 employes of a firm is rs 15000. if 1 person resign from the firm who gets rs 21000 per month, than what will be the mean, monthly salary now
Answer:
Given, the mean of monthly salary of the 13 employees of a firm is 15000
Total salary of the 13 employees = 13*15000 = 195000
Now, one person resigns from the firm.
So, total salary of the 12 employees = 195000 - 21000 = 174000
The mean of monthly salary of the 12 employees = 174000/12 = 145000
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