Q. In all, 500 students appeared for an exam. Out of these, 70% of the Girls and 75% of the boys passed the exam. If the the total pass percentage is 72%, how many girls appeared in the exam?

• Let x no. of girls appeared in the exam,then no. of boys=500-x
  now from ques.
  0.7x+(500-x)0.75=0.72*500
  so,x=300
• 10 years agoHelpfull: Yes(3) No(0)
• girls:boys
  (75-72):(72-70)=3:2
  so no. of girls = 300
• 10 years agoHelpfull: Yes(1) No(0)
• ans: 300 girls
  G+B=500
  0.70G+0.75B=0.72*500
  SOLVE BOTH EQUATIONS WE GET
  B=200 G=300
• 10 years agoHelpfull: Yes(0) No(1)
• Let the number of girls = x
  Number of boys = 500-x
  Now,
  x*0.7 + (500-x)*0.75 = 0.72*500
  which gives x=300
  The number of girls which appeared in the exam are 300
• 9 years agoHelpfull: Yes(0) No(0)