SOLUTION: the population of a town increases by 10% each year for 2 years and then decreases by 10% each year for 2 years . if in the beginning , the population was 100000 , find the popul

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: the population of a town increases by 10% each year for 2 years and then decreases by 10% each year for 2 years . if in the beginning , the population was 100000 , find the popul      Log On


   

Question 948518: the population of a town increases by 10% each year for 2 years and then decreases by 10% each year for 2 years . if in the beginning , the population was 100000 , find the population after 4 years ?.
Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
First year:10000+(0.10)(100000)=110000
Second year:110000+(0.10)(110000)=121000
Third year: 121000-(.10)(121000)=121000-12100=108900
Fourth year: 108900-(0.10)(108900)=108900-10890=98010
ANSWER: After 4 years the population was 98010.