Question

California has a population of 39 million and is declining by 3% per year. Texas has a population of 29 million and is increasing by 1% per year. How many years will it be until TX has more people that CA? Write a program in Java that answers this question.

Answer 1

public class Main
{
   public static void main(String[] args) {
       int pop_CA=39000000; //population of california
       int pop_TX=29000000; //population of texas
       int yr=0;
       while(pop_CA>pop_TX){
       pop_CA=pop_CA-3/100*pop_CA; //decrease by 3%
       pop_TX=pop_TX+pop_TX/100; //decrease by 1%
       yr+=1;
       }
      
       System.out.println(yr);
   }
}

OUTPUT:-