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'}

# Add your function below!

def average(numbers):

```
def sum(numbers):
total=0
for number in numbers:
total+=number
total=float(total)
return total
return sum(numbers)/len(numbers)
```

def get_average(student):

homework=average(student["homework"])

quizzes=average(student["quizzes"])

tests=average(student["tests"])

hw=homework*0.1

qz=quizzes*0.3

ts=tests*0.6

return hw+qz+ts

def get_letter_grade(scores):

for score in scores:

if score>=90:

return "A"

elif score>=80:

return "B"

elif score >=70:

return "C"

elif score >=60:

return "D"

else:

return "F"

def get_class_average(students):

results = []

for item in students:

r=get_average(item)

results.append(r)

return results

print get_letter_grade(students)