using System;

public class Program

{

    public static void Main()

    {

        double Dan = 4.5;

        double Joe = Dan + 3;

        double Tom = Joe * 2;

        double DanOld = Dan + 10;

        double JoeOld = Joe + 10;

        double TomOld = Tom + 10;

        double average = (DanOld + JoeOld + TomOld) / 3;

        Console.WriteLine("The ages of Dan Joe and Tom in 10 years is {0}, {1} and {2}. The average is {3}", DanOld, JoeOld, TomOld, average);

    }

}