a student got 70% in one subject,80% in other.to get overall 75% how much he should get in third subject.

• 75%
  
  Already average of two subjects is (70+80)/2 = 75%
  
  To maintain the percentage at 75%, he shouls get 75% marks in third subject .
• 12 years agoHelpfull: Yes(3) No(1)
• He should get 75% in third subject.
  
  Overall, 75% means = 75* 3 = 225
  
  70 + 80 = 150 in two subjects.
  
  3rd subject = 225 - 150 = 75
• 12 years agoHelpfull: Yes(1) No(1)