https://www.codecademy.com/en/courses/python-beginner-en-qzsCL/1/4?curriculum_id=4f89dab3d788890003000096

hi.

in this exercise i receiving an error.

this is the error i received:

Oops, try again. get_class_average([alice, lloyd]) returned 91.15 instead of 85.85 as expected

i cant understand why its not working because the last exercise working great

```
# Add your function below!
def average(numbers):
total = sum(numbers)
total = float(total)
return total/len(numbers)
def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
return 0.1* homework + 0.3*quizzes + 0.6*tests
def get_letter_grade(score):
if score >89:
return "A"
elif score>79:
return "B"
elif score>69:
return "C"
elif score>59:
return "D"
else:
return "F"
def get_class_average(students):
results = []
for s in students:
results.append(get_average(s))
return average(results)
```