https://www.codecademy.com/en/courses/python-beginner-en-qzsCL/1/3?curriculum_id=4f89dab3d788890003000096

Oops, try again. get_letter_grade(79) returned 'B' instead of 'C' as expected.

Guys , I really need your help here . I can't see where I made a mistake in this code . Thanks

```
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]
}
# Add your function below!
def average(numbers):
total= sum(numbers)
total = float(total)
n = total / len(numbers)
return n
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 >= 70 :
return "B"
elif score >=60 :
return "C"
else :
return "F"
print get_letter_grade(get_average(lloyd))
```