diff --git a/chapter4/const/planner/main.go b/chapter4/const/planner/main.go
index e281513..d82968f 100644
--- a/chapter4/const/planner/main.go
+++ b/chapter4/const/planner/main.go
@@ -2,7 +2,7 @@ package main
 
 import (
 	"fmt"
-	"golang-book/head-first-go/chapter4/const/dates"
+	"headfirstgo/golang-book/chapter4/const/dates"
 )
 
 func main() {
diff --git a/chapter5/average/main.go b/chapter5/average/main.go
index cbb8f39..563b00a 100644
--- a/chapter5/average/main.go
+++ b/chapter5/average/main.go
@@ -1,13 +1,21 @@
 package main
 
-import "fmt"
+import (
+	"fmt"
+	"headfirstgo/headfirstgo/chapter5/datafile"
+	"log"
+)
 
 func main() {
-	numbers := [3]float64{71.8, 56.2, 89.5}
+	numbers, err := datafile.GetFloats("data.txt")
+	if err != nil {
+		log.Fatal(err)
+	}
 	var sum float64 = 0
 	for _, num := range numbers {
 		sum += num
 	}
 
-	fmt.Println(sum)
+	sampleCount := float64(len(numbers))
+	fmt.Printf("Average: %0.2f\n", sum/sampleCount)
 }
diff --git a/chapter5/datafile/floats.go b/chapter5/datafile/floats.go
new file mode 100644
index 0000000..b8e8bcf
--- /dev/null
+++ b/chapter5/datafile/floats.go
@@ -0,0 +1,34 @@
+// Пакет datafile предназначен для чтения данных из файлов
+package datafile
+
+import (
+	"bufio"
+	"os"
+	"strconv"
+)
+
+// GetFloats читает значение float64 из каждой строки файла
+func GetFloats(fileName string) ([3]float64, error) {
+	var numbers [3]float64
+	file, err := os.Open(fileName)
+	if err != nil {
+		return numbers, err
+	}
+	i := 0
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		numbers[i], err = strconv.ParseFloat(scanner.Text(), 64)
+		if err != nil {
+			return numbers, err
+		}
+		i++
+	}
+	err = file.Close()
+	if err != nil {
+		return numbers, err
+	}
+	if scanner.Err() != nil {
+		return numbers, scanner.Err()
+	}
+	return numbers, nil
+}