Question

9. A certain amount is invested at the rate 10% per annum for 3 years. Find the
difference between Compound Interest (CI) and Simple Interest (SI). Write
program to take amount as an input.
Hint: SI = P*R*T
A = P*(1+R/100)T and CI= A-P
100 ,
AL
100​

Answer 1

Answer:

import java.util.Scanner;

public class HelloWorld{

    public static void main(String []args){

        Scanner sc=new Scanner(System.in);

       

       System.out.println("Enter Principal Amount :");

       double p=sc.nextDouble();

       double si = p*10*3/100;

       double ci=p*1.1*1.1*1.1-p;

       System.out.println("Difference between simple interest and compound interest is "+(ci-si));

    }

}

Explanation:

Hope it helps :-)

(1 + R/100)^3 = (1 + 10/100)^3 = (1 + 0.1)^3 = 1.1 * 1.1 * 1.1

Answer 2

import java.util.Scanner;

public class HelloWorld{

   public static void main(String []args){

       Scanner sc=new Scanner(System.in);

       

      System.out.println("Enter Principal Amount :");

      double p=sc.nextDouble();

      double si = p*10*3/100;

      double ci=p*1.1*1.1*1.1-p;

      System.out.println("Difference between simple interest and compound interest is "+(ci-si));

   }

}