To find the price per cup of milk, we first need to determine how many cups are in a 4-pint carton.
1 pint = 2 cups
So, 4 pints = 4 × 2 = 8 cups.
Now, we can calculate the price per cup:
Total cost of the carton = $1.28
Price per cup = Total cost / Number of cups
Price per cup = $1.28 / 8 = $0.16
Thus, the price per cup is $0.16.