The ratio of the number of boys and girls who appeared for the exam is 15:7. Out of the total number of boys and girls, the number of boys and girls who cleared their exams is in the ratio of 3:2. Find out the percentage of boys who passed in the exam if it is given that 65 % of the girls cleared their exams.

• 45.5%
  
  if there are 15x boys and 7x girls out of which 3y boys and 2y girls passed, then
  2y/7x = 65/100
  y= x*91/40
  
  the percentage of boys who passed in the exam = 100*3y/15 x = 45.5%
• 11 years agoHelpfull: Yes(8) No(3)
• no.of boys:no.of girls=15:7
  total students= 15x+7x
  let the total no. of students who cleared the exams be 3y+2y
  2y=0.65*7x
  therefore y= (91/40 )x
  
  Total No. of boys who cleared = 3y= 3(91/40)x=6.8x
  
  % of boys who passed= (no. of boys who passed)/total no. of boys =15x/6.8x = 45.5% ...............answer
• 9 years agoHelpfull: Yes(1) No(0)