Модуль: Subroutines: procedures and functions - 2

Задача

Given a program fragment:

var x, y: integer;
sr: real;

...
function Avg(a, b: integer): real;
begin
    Avg := (a + b) / 2;
end;

begin
 ...
 x := 2;
 y := 5;
 sr := Avg(x, 2 * y + 8);
 ...
end.

What will be the value of the variable sr after the execution of the program fragment?