The population of a village is 5500. If the number of males increases by 11 % and the number of females increases by 20 %, then the population becomes 6330. Find the population of females in the town?
a) 2500
b) 3000
c) 3500
d) 2250
e) None of these.

• Let X is the initial population of Male and Y be the initial population of Female
  
  X + Y = 5500 .........(1)
  
  If the number of males increases by 11 % and the number of females increases by 20 %, then
  
  
  Percentage problems for SSC RRB IGNOU Hotel Management exms
  
  1.11 X + 1.2 Y = 6330 , On putting the value of X from equeation (1)
  
  1.11 ( 5500 - Y ) + 1.2 Y = 6330
  
  Y = 2500, Population of females in town
• 8 years agoHelpfull: Yes(8) No(1)
• Let X is the initial population of Male and Y be the initial population of Female
  
  X + Y = 5500 .........(1)
  
  If the number of males increases by 11 % and the number of females increases by 20 %, then
  
  1.11 X + 1.2 Y = 6330 , On putting the value of X from equeation (1)
  
  1.11 ( 5500 - Y ) + 1.2 Y = 6330
  
  Y = 2500,
  But after increasing the 20% population of females
  y=1.2*2500
  =>y=3000
  so correct option is b)3000
• 8 years agoHelpfull: Yes(1) No(1)
• Let number of females
  =
  x
  =x
  number of males
  =
  5500
  −
  x
  =5500−x
  
  (
  5500
  −
  x
  )
  ×
  111
  100
  +
  x
  ×
  120
  100
  =
  6330
  111
  (
  5500
  −
  x
  )
  +
  120
  x
  =
  633000
  610500
  −
  111
  x
  +
  120
  x
  =
  633000
  9
  x
  =
  22500
  x
  =
  2500
  
• 8 years agoHelpfull: Yes(0) No(0)
• 2500
  x is population of male nd 5500-x is population of female
  x*111/100+(5500-x)*120/100=6330
• 7 years agoHelpfull: Yes(0) No(0)