Juanita is mixing orange and blue paint to make yellow paint. She has 5/8 of a gallon of blue paint, but she needs 7/8 of a gallon. How much more blue paint does she need? Simplify the answer.(1 point)

Juanita needs 7/8 - 5/8 = 2/8 = 1/4 of a gallon more blue paint. Answer: \boxed{\frac{1}{4}}.