Question

a class contains b number of boys and g number of girls .on a rainy day ba number of boys and ga number of girls are absent write a program to input the values of b,g,ba,ga calculate and display the following
I) percentage of girls present in the class
ii) percentage of boys present in the class​

Answer 1

Answer:

import java.util.*;

class CLASS

{

public static void main(String[] args)

{

Scanner sc = new Scanner(System.in);

System.out.println("Enter the number of boys");

int b = sc.nextInt();

System.out.println("Enter the number of girls");

int g = sc.nextInt();

int total = b+g;

double ba = (b*100.0)/total;

double ga = (g*100.0)/total;

System.out.println("Number of boys absent on rainy day " +ba);

System.out.println("Number of girls absent on rainy day " +ga);

}

}

Answer 2

Answer:

import java.util.Scanner;

public class percentage

{

public static void main(String args[])

{

Scanner sc = new Scanner(System.in);

System.out.println("Enter the no. of boys: ");

int b = sc.nextInt();

System.out.println("Enter the no. of girl: ");

int g = sc.nextInt();

int total = b + g;

System.out.println("Enter the no. of boys absent :");

int ba = sc.nextInt();

System.out.println("Enter the no. of girls absent :");

int ga = sc.nextInt();

double percentage_ba = (ba*100.0)/total;

double percentage_ga = (ga*100.0)/total;

double percentage_bp = 100.0 - percentage_ba; // bp = boys present

double percentage_gp = 100.0 - percentage_ga; // gp = girls present

System.out.println("Boys present = "+ percentage_bp + "%");

System.out.println("Girls present = " + percentage_gp + "%");

} // method ends here

} // class ends here

Explanation:

I hope it will help you!