//Tested on Eclipse /****************Equivalence.java*************/ package chegg; import java.util.Scanner; public class Equivalence { /*Income tax calculation method*/ public void calculateTax(double income){ double tax=0; /*Based on provided data in question*/ if(income<10){ tax=tax+0; }else if(income>=10 && income<20){ tax=tax+(income*10)/100; }else if(income>=20 && income<40){ /*add 10 % of 10k means 1k needs to be added in tax*/ tax=tax+1+((income-20)*12)/100; }else if(income>=40 && income<80){ /*add 10 % of 10k means 1k and 12% of 20k needs to be added in tax*/ tax=tax+1+2.4+((income-40)*15)/100; }else if(income>=80){ /*add 10 % of 10k means 1k and 12% of 20k and 15 % of 40k needs to be added in tax*/ tax=tax+1+2.4+6+((income-80)*20)/100; } System.out.println(\"Total Tax is: $\"+tax+\"K\"); } /*Main method start*/ public static void main(String args[]){ /*Variable declaration*/ double income; Scanner input=new Scanner(System.in); /*Class object creation*/ Equivalence equivalence=new Equivalence(); /*Prompt for income*/ System.out.println(\"Please Enter the income\"); income=input.nextDouble(); /*calling calculateTax method*/ equivalence.calculateTax(income); } } /************output***********/ Please Enter the income 25 Total Tax is: $1.6K Solution //Tested on Eclipse /****************Equivalence.java*************/ package chegg; import java.util.Scanner; public class Equivalence { /*Income tax calculation method*/ public void calculateTax(double income){ double tax=0; /*Based on provided data in question*/ if(income<10){ tax=tax+0; }else if(income>=10 && income<20){ tax=tax+(income*10)/100; }else if(income>=20 && income<40){ /*add 10 % of 10k means 1k needs to be added in tax*/ tax=tax+1+((income-20)*12)/100; }else if(income>=40 && income<80){ /*add 10 % of 10k means 1k and 12% of 20k needs to be added in tax*/ tax=tax+1+2.4+((income-40)*15)/100; }else if(income>=80){ /*add 10 % of 10k means 1k and 12% of 20k and 15 % of 40k needs to be added in tax*/ tax=tax+1+2.4+6+((income-80)*20)/100; } System.out.println(\"Total Tax is: $\"+tax+\"K\"); } /*Main method start*/ public static void main(String args[]){ /*Variable declaration*/ double income; Scanner input=new Scanner(System.in); /*Class object creation*/ Equivalence equivalence=new Equivalence(); /*Prompt for income*/ System.out.println(\"Please Enter the income\"); income=input.nextDouble(); /*calling calculateTax method*/ equivalence.calculateTax(income); } } /************output***********/ Please Enter the income 25 Total Tax is: $1.6K.

1. //Tested on Eclipse
/****************Equivalence.java*************/
package chegg;
import java.util.Scanner;
public class Equivalence {
/*Income tax calculation method*/
public void calculateTax(double income){
double tax=0;
/*Based on provided data in question*/
if(income<10){
tax=tax+0;
}else if(income>=10 && income<20){
tax=tax+(income*10)/100;
}else if(income>=20 && income<40){
/*add 10 % of 10k means 1k needs to be added in tax*/
tax=tax+1+((income-20)*12)/100;
}else if(income>=40 && income<80){
/*add 10 % of 10k means 1k and 12% of 20k needs to be added in tax*/
tax=tax+1+2.4+((income-40)*15)/100;
}else if(income>=80){
/*add 10 % of 10k means 1k and 12% of 20k and 15 % of 40k needs to be added in tax*/
tax=tax+1+2.4+6+((income-80)*20)/100;
}
System.out.println("Total Tax is: $"+tax+"K");
}
/*Main method start*/
public static void main(String args[]){
/*Variable declaration*/
double income;
Scanner input=new Scanner(System.in);
/*Class object creation*/
Equivalence equivalence=new Equivalence();
/*Prompt for income*/
System.out.println("Please Enter the income");
income=input.nextDouble();

2. /*calling calculateTax method*/
equivalence.calculateTax(income);
}
}
/************output***********/
Please Enter the income
25
Total Tax is: $1.6K
Solution
//Tested on Eclipse
/****************Equivalence.java*************/
package chegg;
import java.util.Scanner;
public class Equivalence {
/*Income tax calculation method*/
public void calculateTax(double income){
double tax=0;
/*Based on provided data in question*/
if(income<10){
tax=tax+0;
}else if(income>=10 && income<20){
tax=tax+(income*10)/100;
}else if(income>=20 && income<40){
/*add 10 % of 10k means 1k needs to be added in tax*/
tax=tax+1+((income-20)*12)/100;
}else if(income>=40 && income<80){
/*add 10 % of 10k means 1k and 12% of 20k needs to be added in tax*/
tax=tax+1+2.4+((income-40)*15)/100;
}else if(income>=80){
/*add 10 % of 10k means 1k and 12% of 20k and 15 % of 40k needs to be added in tax*/
tax=tax+1+2.4+6+((income-80)*20)/100;
}
System.out.println("Total Tax is: $"+tax+"K");

3. }
/*Main method start*/
public static void main(String args[]){
/*Variable declaration*/
double income;
Scanner input=new Scanner(System.in);
/*Class object creation*/
Equivalence equivalence=new Equivalence();
/*Prompt for income*/
System.out.println("Please Enter the income");
income=input.nextDouble();
/*calling calculateTax method*/
equivalence.calculateTax(income);
}
}
/************output***********/
Please Enter the income
25
Total Tax is: $1.6K