A sum of Rs 39 was divided among 45 boys and girls. Each girl gets 50 paise, whereas a boy gets one rupee. Find the number of boys.

1) 31
2) 33
3) 35
4) 29

• Lets assume there are x girls . Each girl gets 50/100 Rs share while boy gets 100/100 Rs share.
  
  So we Have,
  
  x*1/2 + 45 * 1 = 39
  x = - 12 (-ve sign here indicates that if we have 45 boys each getting 1 Rs would exceed 39 Rs. So ignore -ve sign).
  So if there are 12 girls , Total amount girls will receive = 12* 0.5 = 6Rs
  Remaining 33 Rs has to be shared amongs boys.
  As each boy receives 1Rs so We can say we have total 33 Boys.
  
  So 33*1 + 12*.5 = 39 Rs ---- Verified.
• 9 years agoHelpfull: Yes(0) No(0)
• lets assume there are x girls then boys=45-x.
  so x*0.5+45-x=39
  x=12 i.e girls hence boys is 45-12=33.
• 9 years agoHelpfull: Yes(0) No(0)