A 4-quart jug of windshield washer fluid costs $9.12. What is the price per cup?
Hint: There are 4 cups in 1 quart.
To find the price per cup, we need to divide the total price by the total number of cups.
1 quart = 4 cups
Therefore, the 4-quart jug contains 4 x 4 = <<4*4=16>>16 cups.
The price per cup is $9.12 / 16 = $<<9.12/16=0.57>>0.57. Answer: \boxed{0.57}.