9/10 divided by 2 2/5

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1

What is the gcf of 20c^3-5c^4+30c^6

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?