public class Demonstrate {
 public static void main (String argv[]) {
  int counter, sum = 0;
  int durations [] = {65, 87, 72, 75};
  for (counter = 0; counter < durations.length; ++counter)
    sum = sum + durations[counter];
  System.out.print ("The average of the " + durations.length);
  System.out.println (" durations is " + sum / durations.length);
 }
}