The population of a town increases 5% annually but is decreased by emigration annually in the extent of (1/2)%. What will be the increase percent in 3 years?

• 13.5 as 5% increment and also 1/2 % decrements so total increment is 5-1/2= 4.5% ;; 3 years increment is 3*4.5= 13.5
• 10 years agoHelpfull: Yes(1) No(1)
• assume initial population as 'a'
  a*(105*99.5)^3100^6=1.140344a
  therefore % increased is 14.034%
• 10 years agoHelpfull: Yes(0) No(0)
• 14.11%
  total increment=5-(1/2)=4.5
  let x1 be the initial population den after 3 year it will be
  x2=x1*{1+(4.5/100)}^3....(population is compounded every year)
  x2=1.1411*x1
  so total percentage increment={(x2-x1)/x1}*100=14.11%
• 10 years agoHelpfull: Yes(0) No(0)