The average monthly salary of all employees in a factory is $600 and that of 16 officers is $3000. If the average monthly salary of workers is $550, the number of workers, leaving aside officers, in the factory is
A. 744
B. 768
C. 842
D. 802
E. None of these

• 600*x=16*3000+(16-x)*550
  x=768
• 8 years agoHelpfull: Yes(0) No(0)
• Let the total number of workers in the workshop be x.
  Then, number of other workers (besides technicians) = (x - 7)
  Given, (x - 7) x 7800 + 7 x 10000 = 8500x
  ⇒
  7800x - 54600 + 7000 = 8500x
  ⇒
  700x = 15400
  ⇒
  x =
  15400
  700
  ⇒
  x
  =
  22
• 5 Months agoHelpfull: Yes(0) No(0)