In a school 10% students get 70 marks,25% students get 80 marks,20% students get 85 marks,25% students get 90 marks,reemaing get 95 marks.the average of students marks is even number then least number of students?
a)20
b)80
c)100
d)200

• A)20
  10% of 20=2, 2*70=140
  25% of 20=5, 5*80=400
  15%of 20=3, 3*85=255
  25% 0f 20=5, 5*90=450
  remaining students= (20-(2+5+3+5))=5
  5*95=475
  avg.= 140+400+255+450+475=1720/20 =86
  
  reply if i m wrong
• 8 years agoHelpfull: Yes(4) No(6)
• c)100
  by back calculation
• 8 years agoHelpfull: Yes(0) No(2)
• This is wrong.
  
• 7 years agoHelpfull: Yes(0) No(0)