Question

Assume that the population of Mexico is 128 million and that the population increases 1.01 percent annually. Assume that the population of the United States is 323 million and that the population is reduced 0.15 percent annually. Write an application that displays the populations for the two countries every year until the population of Mexico exceeds that of the United States, and display The population of Mexico will exceed the U.S. population in X years

Answer 1

Answer:

//Define class

public class Main {

 //define main method

 public static void main(String[] args)  

 {

   //declare and initialize the double type variable to 128

   double mexico = 128;

   //declare and initialize the double type variable to 323

   double us = 323;

   //declare and initialize the integer type variable to 0  

   int yr = 0;

   //set the while loop to check which is greater

   while (mexico < us)  

   {

     //increment in the variable by 1

     yr++;

     //initialize in the variables acc. to the percentage

     mexico *= 1.0101;

     us *= 0.9985;

   }

   //print the following results

   System.out.println("Population of the Mexico will be exceed the population U.S. in " + yr + " years");

   System.out.println("Population of the Mexico will be " + mexico + " million");

   System.out.println("and population of the U.S. will be " + us + " million");

 }

}

Output:

Population of the Mexico will be exceed the population U.S. in81 years

Population of the Mexico will be 288.88435953355025 million

and population of the U.S. will be 286.0198193927948 million

Explanation:

Following are the description of the program.

• Firstly, we define the class 'Main' and inside it, we define the main method.
• Then, declare two double data type variables which are 'mexico' and 'us' and initialize in it to 128 and 323.
• Declare integer data type variable 'yr' and initialize in it to 0.
• Set the while loop and pass the condition to check that the variable 'mexico' is less than the variable 'us' then, increment in the variable 'yr' by 1 and multiply the variables 'us' and 'mexico' by the following percentage.
• Finally, print the following results with the message.