In a certain school, 20% of students are below 10 years of age. The number of students above 10 years of age is 2/3 of the number of students of 10 years of age which is 48. What is the total number of students in the school?
A)100 B)120 C)72 D)80

• Let the number of students be x. Then, Number of students above 10 years of age ,,
  (100−20)% of x = 80% of x
  therefore,, 80% of x = 48 + 2/3 of 48 => 80/100 x = 80
  Answer is x = 100...
• 4 years agoHelpfull: Yes(6) No(0)
• Let x be the number of students
  20% of x+2/3 of 48 +48=x
  X/5+32+48=x
  80=4/5x
  X=100
• 4 years agoHelpfull: Yes(2) No(0)