When a student weighing 45 kgs left a class, the average weight of the remaining 59 students increased by 200g. What is the average weight of the remaining 59 students?

• 57 kg
  
  Let the avg wt of 59 students be x
  
  (59x + 45) / 60 = (x - 0.2)
  That is,
  (59x + 45) = 60x - 12
  x = 57
• 12 years agoHelpfull: Yes(51) No(7)
• let avg age of 60 students be=x
  so now acc 2 ques=(60x-45)/59=x+.2
  on solving v get x=56.8
  so present avg=56.8+.2=57(ans)
• 10 years agoHelpfull: Yes(11) No(1)
• total students=60
  1 student left
  his weight=45kg
  avg weight of remaining 59 students=?
  avg weight of 60 students =total/60=x
  total=60*x
  now avg weight of 59 stud=total-45/59
  (total-45)/59=x+0.2(increased by 20grams,given)
  total-45=59(x+0.2)
  total-45=59x+11.8
  60x-45=59x+11.8(total=60x)
  x=45+11.8
  x=56.8
  total weight of 60 students=60(56.8)=3408
  total weight of 59 students=3408-45
  =3363
  avg weight of 59 students=3363/59=57
  answer is 57
  
• 10 years agoHelpfull: Yes(7) No(0)
• it wuld b decreased by 200g not increased
• 10 years agoHelpfull: Yes(4) No(2)