已知等差数列{a_n}前四项中第二项为606，前四项和S_n为3834，则该数列第4项为（　　）

    Hi, I'm Mary. I'm a pupil. I usually get up at six on weekdays. I have tea and bread for breakfast. I have two friends. One is Lucy and the other is Lily. Lucy often gets up at six thirty. She likes bread and milk. But Lily likes hamburgers and tea. She doesn't like milk at all.

一款东西120元，先涨价30%，再打8折，原来（120元），利润率为50%．则现在变为____%．