A sum of Rs.312 was divided among 100 boys and girls in such a way that the boy gets Rs.3.60 and each girl Rs.2.40 the number of girls is

• 60boys
  40 girls
  60*3.60+40*2.40=312
• 11 years agoHelpfull: Yes(1) No(2)
• Explanation:
  Step (i): Let x be the number of boys and y be the number of girls.
  Given total number of boys and girls = 100
  x+y=100 -------------- (i)
  
  Step (ii): A boy gets Rs. 3.60 and a girl gets Rs. 2.40
  The amount given to 100 boys and girls = Rs. 312
  3.60x + 2.40y = 312 -------------- (ii)
  
  Step (iii):
  Solving (i) and (ii)
  3.60x + 3.60y = 360 --------- Multiply (i) by 3.60
  3.60x + 2.40y = 312 --------- (ii)
  1.20y = 48
  y = 48 / 1.20
  = 40
  
  Number of girls = 40
• 8 years agoHelpfull: Yes(0) No(0)