Answer:
12 cups
Explanation:
There's 16 cups in a gallon so keep that in mind
And if there's 16 cups in a gallon then that means there's 8 cups in half a gallon
And if there's 8 cups in half a gallon then there must be 4 cups in a quart
Soooo if he bought a quart (4 cups) and a half gallon (8 cups)
Then he bought 12 cups of milk total