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

Hello, I have the following message and I can't find the solution: "Oops, try again. get_class_average([alice, lloyd]) returned 91.15 instead of 85.85 as expected"

```
def average (numbers):
total = sum(numbers)
return float(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 >= 90:
return "A"
elif score >= 80:
return "B"
elif score >= 70:
return "C"
elif score >= 60:
return "D"
else:
return "F"
print get_letter_grade(get_average(lloyd))
def get_class_average (students):
results = []
for student in students:
results.append(get_average(student))
return average(results)
```