The average salary of workers in an industry is Rs.200 the average salary of 150 technicians being Rs.400 and that of non-technicians being Rs. 125. what is the total number of workers?
option
a) 400
b) 450
c) 550
d) 500
e) none

• let no of non-technicians be x then a/q
  150*400 + 125x = 200(x+150)
  60000+125x=200x+30000
  =>75x=30000
  =>x=400
  hence total no of workers 400+150 = 550
• 10 years agoHelpfull: Yes(5) No(1)
• let there be n number of workers
  hence 150 technicians and (n-150)non technicians
  200*n=150*400+125*(n-150)
  n=550
• 9 years agoHelpfull: Yes(2) No(1)
• c) 550
  Let no of non-technicians be x then
  find salary
  150*400 for technicians
  x*125 for non technicians
  (150+x)*200 for workers
  equal the salary
  150*400 + 125*x = 200*(x+150)
  60000+125x=200x+30000
  =>75x=30000
  =>x=400
  Hence total no of workers 400+150 = 550
• 9 years agoHelpfull: Yes(1) No(0)
• ans c=550
  let no of workers=x
  x*200=150*400-(x-150)125
  solving we get x=550
  
• 9 years agoHelpfull: Yes(0) No(0)
• the correct option is (C). 550. the avg sal. of 150 tech. is 400. and that rs 125. so we have to make it rs 200 for all workers .. so 150 tech .. are getting 150*400= 60,000rs ..so make it for them as rs 200. so 150 tech. will get now rs 30,000 from (60,000). now divide the rest 30,000/75 to make avg sal. for non-tech. as rs 200..(125+75=200) . so .30000/75=400.
  so no: of tech. are =150
  no: of non tech. are = 400.
  total workers are =550.
  hence ans . is option (c)550.
  
• 9 years agoHelpfull: Yes(0) No(0)
• c)
  total salary of 150 technitian=150*400
  let non tech=x so total salary of non technitian=x*125
  150*400+x*125=(150+x)*200
  x=400
  so total worker=550
• 9 years agoHelpfull: Yes(0) No(0)
• 200s-125s=150*400-25*150
  =>S=550
  ANSWER=C
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• (d)550
  Let the total no. of workers be X
  Technicians=150
  Non-technicians=X-150
  200*X=150*400+125*(X-150)
  200*X=60000+125X-18750
  200X-125X=41250
  75X=41250
  X=41250/75
  X=550
  
  
• 9 years agoHelpfull: Yes(0) No(0)
• (150*400+125*x)/150+x=200
  x=400
  400+150=550
• 9 years agoHelpfull: Yes(0) No(0)
• let non-tech. workers are x then total is (x+150) worker
  so 150*400+125x=(x+150)200
  x=400
  therefore total no of worker is 400+150=550
• 8 years agoHelpfull: Yes(0) No(0)
• c)550
  (150*400)+125*x=200(150+x)
  x=400
  
  hence total number of workers=(400+150)=550
• 8 years agoHelpfull: Yes(0) No(0)
• let toal no of worker is x
  200x=150*400+(x-150)125
  =550
• 8 years agoHelpfull: Yes(0) No(0)