In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is of the number of students of 8 years of age which is 48. What is the total number of students in the school?
1)72
2)80
3)120
4)150
5)100

• above 8 yrs+8 yrs=48+48=96
  96 80%of total
  x 100%of total
  x=96*100/80=120
• 12 years agoHelpfull: Yes(11) No(4)
• Let the number of students be x. Then,
  
  Number of students above 8 years of age = (100 - 20)% of x = 80% of x.
  
  80% of x = 48 + 2 of 48
  3
  80 x = 80
  100
  x = 100.
• 10 years agoHelpfull: Yes(5) No(5)
• Some info is missing. Because the total number of students is coming as float value.
  
  Explanation: Number of students above 8 years of age = (100 - 20)% of x = 80% of x.
  The number of students above 8 years of age is of the number of students of 8 years of age which is 48. Means 80% of x = 48 + 48
  
  Solving this equation x value is not a integer.
• 12 years agoHelpfull: Yes(3) No(2)
• No. of students with age=8 yr=48
  No. of students with age>8 yr=48
  So, total no. of student with age 8 or greater than 8=48+48=96
  now, let no. of student with age
• 11 years agoHelpfull: Yes(2) No(2)
• students:- above 8 yrs = at 8 yrs = 48
  so (above 8 yrs) +(at 8 yrs) = 48+48=96
  20% are below 8 yrs
  80% of students is 96
  =>(80%/96=20%/x)=>24
  total=24+96=120. ans 120
• 8 years agoHelpfull: Yes(2) No(1)
• option 3)120
• 8 years agoHelpfull: Yes(1) No(0)
• 120...
  abov 8 years and equal to 8 years are 48+48=96....remaining 20% are bellow 8 years.....so 96 satudents are of(100-20
  )=80%....then 20%=24 so answer is 48+48+24=120
• 8 years agoHelpfull: Yes(1) No(0)
• 3)120
  let the total number of students be x
  then ,x-20x/100 = 48+48
  solving we get x = 120
• 8 years agoHelpfull: Yes(1) No(0)
• let total no of students =x
  20%of x= below 8
  80%of x=(above 8 and equal to 8)
  =(48+48)
  =96
  so above 8 and exact 8 year student=120
  now (20% of x+ 120)=x
  so we get x=150
• 8 years agoHelpfull: Yes(0) No(2)
• let jawa=100x/100
  moh=80x/100
  shyaam =100x/100
  ram=90x/100=360×100/500
  x=80
  frm 1st equation jawa= 80%
  
• 7 years agoHelpfull: Yes(0) No(0)
• at age=above age=48
  
  above age+at age+below age =no.of students in the class
  
  20%-below age
  80%above age
  
  
  80% = 96
  20%=p
  
  p*80/100=96*20/100
  p=24
  
  hence at age + above age +below age =x
  
  
  therefore 48+48+24=120
  
  x=120 option 3)
  
  
  
  
  
  at age+above age=48+48=96
• 6 years agoHelpfull: Yes(0) No(0)