The population of a town increases by 5% every year. If the present population is 9261, the population 3 years ago was:

(1) 6000 (2) 7500 (3) 8000 (4) 5700

• 9261=x(1+5/100)^3,
  x=(9261*100*100*100)/(105*105*105)=8000
  so 3 will be ans
  
• 9 years agoHelpfull: Yes(2) No(3)
• Ist year 100 105 =>20 21
  IInd year 100 105 =>20 21
  IIIrd year 100 105 => 20 21
  8000 9 2 6 1
• 8 years agoHelpfull: Yes(1) No(1)