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A school has following rules for grading system: a. Below 25 - F b. 25 to 45 - E c. 45 to 50 - D d. 50 to 60 - C e. 60 to 80 - B f. Above 80 - A Ask user to enter marks and print the corresponding grade.

A school has following rules for grading system: a. Below 25 - F b. 25 to 45 - E c. 45 to 50 - D d. 50 to 60 - C e. 60 to 80 - B f. Above 80 - A Ask user to enter marks and print the corresponding grade. import java.util.Scanner ; class Ans { public static void main ( String [] args ){ Scanner s = new Scanner ( System . in ); System . out . println ( "Enter your marks" ); int x = s . nextInt (); if ( x < 25 ){ System . out . println ( "F" ); } else if (( x >= 25 )&&( x < 45 )){ System . out . println ( "E" ); } else if (( x >= 45 )&&( x < 50 )){ System . out . println ( "D" ); } else if (( x >= 50 )&&( x < 60 )){ System . out . println ( "C" ); } else if (( x >= 60 )&&( x < 80 )){ System . out . println ( "B" ); } else if (( x >= 80
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Write Java program to allow the user to input his/her age. Then the program will show if the person is eligible to vote. A person who is eligible to vote must be older than or equal to 18 years old.

import java.util.*;  class Vote { public static void main(String args[]) { int age; Scanner sc=new Scanner(System.in); System.out.print("What is your age?"); age=sc.nextInt(); if(age>=18) System.out.println("You are eligible to vote."); else System.out.println("You are not eligible to vote."); } } Output:What is your age? 18 You are eligible to vote.
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A Computer Salesman gets commission on the following basis using Java

/*A computer salesman gets commission on the following basis:             Sales                        Commission Rate             Rs. 0 - 20,000                      3%             Rs. 20,000 - 50,000                12%             Rs. 50,001 and more                31% After accepting the sales as input, calculate and print his commission amount and rate of commission.*/ Source code: import java.util.*; class Comm {     public static void main(String args[])     {         double comm=0.0;         int rate=0,sale;         Scanner sc=new Scanner(System.in);         System.out.println("Enter the sales rs:");         sale=sc.nextInt();         if(sale<=20000)         {             rate=3;             comm=sale*0.3;         }         if(sale>=20000 && sale<=50000)         {             rate=12;             comm=sale*0.12;         }         if(sale>=50000)         {             rate=31;             comm=sale*0.31;         }  
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