My code returns the error "Oops, try again. get_class_average([lloyd]) returned 85.85 instead of 80.55 as expected:"

I'll be honest, I'm at a loss on this one. I've reviewed other people who've been having issues with the same one, and I don't seem to be making any of the same mistakes. I can even copy their code, make the correction that supposedly fixes it and it still fires back the same error.

```
lloyd = {
"name": "Lloyd",
"homework": [90.0, 97.0, 75.0, 92.0],
"quizzes": [88.0, 40.0, 94.0],
"tests": [75.0, 90.0]
}
alice = {
"name": "Alice",
"homework": [100.0, 92.0, 98.0, 100.0],
"quizzes": [82.0, 83.0, 91.0],
"tests": [89.0, 97.0]
}
tyler = {
"name": "Tyler",
"homework": [0.0, 87.0, 75.0, 22.0],
"quizzes": [0.0, 75.0, 78.0],
"tests": [100.0, 100.0]
}
students = [lloyd, alice, tyler]
def average(numbers):
total = sum(numbers)
total = float(total)
total = total / len(numbers)
return total
def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
homework = homework * .10
quizzes = quizzes * .30
tests = tests * .60
return homework + quizzes + 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"
results = []
def get_class_average(students):
for student in students:
results.append(get_average(student))
return average(results)
```

Any ideas?