Question 62
There are two branches of a bank employing 100 and 80 persons respectively. If the arithmetic mean of the monthly salaries paid by these two branches are Rs. 275 and Rs. 225 respectively, the arithmetic mean of all employees of two branches together is
___________.
Solution
Arithmetic means of both the branches together = {(275*100)+(225*80)}/180 = 252.78
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