A hybrid SUV gets 32miles per gallon on the highway driving at a constant 55 miles per hour. At this rate, how many gallons per hour does the hybrid SUV use?

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?