The average weight of 15 students of a class is 60kg If 5 students leave the class whose average
weight is 40 kg. what is the average weight of the 10 students who are left in the class ?

• 70 kg.
  
  Average wt. of 10 students= [(Total wt. of 15 students)- (total wt. of 5 students)]/10
  =[(15*60) - (5*40)]/10=(900-200)/10=70
• 9 years agoHelpfull: Yes(4) No(0)
• ans=70 kg
  15*60=900
  5*40=200
  for 10 student it is 700
  so avg=700/7=70
• 9 years agoHelpfull: Yes(2) No(0)
• avg wt = total wt/ no student
  so 60= total wt/15
  total wt = 900 kg
  5 students leave the class whose avg wt=40kg
  
  remain wt=900-200=700kg
  
  avg wt for 10 student= 700/10=70kg
  
• 9 years agoHelpfull: Yes(1) No(0)