The school buys 360 books, and distributes (1/3) among them to the lower grades, and distributes the rest to the middle grades and senior grades at a ratio of 3:5. How many books will the senior grades get?
学校购进360本图书，把其中的(1/3)分给低年级，余下的按3：5分别分给中年级和高年级，高年级分得多少本书？
<result>60</result>