Earl is cutting a piece of cardboard in his art class. First he cut off 20% of the cardboard. Then he cut off 1 over 3 of the cardboard that was left. The piece of cardboard that Earl started with had an area of 900 square centimeters. What is the area, in square centimeters, of cardboard that was left after Earl made his cuts?

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?