class Challenge1_6
{
   public static void main(String[] args)
   {
      // 1. Declare 3 int variables called grade1, grade2, grade3
      // and initialize them to 3 values
       int grade1 = 78;
       int grade2 = 95;
       int grade3 = 84;
 
      // 2. Declare an int variable called sum for the sum of the grades
       int sum;
      // 3. Declare a variable called average for the average of the grades
       double average;
      // 4. Write a formula to calculate the sum of the 3 grades (add them up).
       sum = grade1 + grade2 + grade3;
      // 5. Write a formula to calculate the average of the 3 grades from the sum using division and type casting.
       average = sum / 3.0;
      // 6. Print out the average
       System.out.println(average);
   }
}

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