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static void Main(string[] args)
{
AverageAge averageAge = new AverageAge();
averageAge.AddPerson(Person.Create("Person #1"));
averageAge.AddPerson(Person.Create("Person #2"));
averageAge.AddPerson(Person.Create("Person #3"));
Console.WriteLine("Average Age: " + averageAge.Get());
Console.ReadKey();
}