static void FindRicher(List <People> pp)
{
People richMan = pp.OrderByDescending(n => n.Balance).FirstOrDefault();
Console.WriteLine("Самый богатый: " + richMan.Name + " - " + richMan.Balance);
}
static void FindOlder(List <People> pp)
{
People oldMan = pp.OrderByDescending(n => n.Age).FirstOrDefault();
Console.WriteLine("Самый старший: " + oldMan.Name + " - " + oldMan.Age);
}