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The mean of monthly salary of 12 employees of a firm is ₹15000 if one person resigns whose salary is 21000 per month then what is the mean of the monthly

salary now


Mean= average.
so x/12=15000
so first find the total salary of the firm
so x = 15000*12
so x= 180000
firm =180000
so 180000-21000
so mean of 11 workers= 159000/11. solve the division yourself
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