Two cars leave towns 300 kilometers apart at the same time and travel toward each other. one car's rate is 10 kilometers per hour more than the other's. if they meet in 2 hours, what is the rate of the faster car?

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?