The average salary of all the staff in an
office of a corporate house is Rs. 5,000.
The average salary of the officers is Rs.
14,000 and that of the rest is Rs. 4,000. If
the total number of staff is 500, the
number of officers is

• lets the number of officer be x
  
  and rest of staff is (500-x)
  
  
  and here given that avg. of all staff is 5000
  
  so put into equation
  
  14000x+4000(500-x)/500=5000
  
  after solving this we get x=50
  
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