The perimeter of the rectangular playing field is 412 yards. The length of the field is 6 yards less than triple the width What are the dimensions of the playing field

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?