using System;
public class Program
{
public static void Main()
double sum=0, avg=0;
double[] numbers = { 20, 20, 50, 40};
for(int i=0;i<numbers.Length;i++)
sum += numbers[i];
}
avg = sum / numbers.Length;
Console.WriteLine("The Sum is : "+sum);
Console.WriteLine("The Average is : "+avg);