Xavier earns $20 a day plus a fee for each room cleaned. For cleaning 6 rooms, he earned $252 plus his $20 fee. How much does Xavier earn for each room he cleans?

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?