Answer:
The answer to your question is 3/2 cups
Explanation:
Data
Milk needed = 4 cups
Milk that she has = 3/4
Milk her neighbor has = 3/4
Milk the second and third neighbors have = 1/2
Process
1.- Calculate the Milk that Joanna has
3/4 + 3/4 + 1/2 + 1/2 = (3 + 3 + 2 + 2) / 4
= 10/4
= 5/2
2.- Subtract the Milk that she has from the Milk needed.
4 - 5/2 = (8 - 5) / 2
= 3/2
3.- Conclusion
Joanna needs 3/2 cups to make a pudding.