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)

avg=total/len(numbers)

return avg

def get_average(student):

homework=average(student["homework"])

quizz=average(student["quizzes"])

test =average(student["tests"])

ans=0.10*homework+0.3*quizz+0.6*test

return ans

def get_letter_grade(score):

if score >=90:

print "A"

elif score>=80:

print "B"

elif score>=70:

print "C"

elif score>=60:

print "D"

elif score>=50:

print "E"

else:

print "F"

result=get_average(lloyd)

print get_letter_grade(result)

def get_class_average(students):

results=[]

for item in students:

```
results.append(get_average(item))
return average(results)
```

students=[lloyd,alice,tyler]

print get_class_average(students)

print get_letter_grade(get_class_average(students))