This question examines the mathematics knowledge of the sixth grade of primary school, and needs to be analyzed and answered by using the relevant content of proportion. Distribute 360 books to junior, middle and senior grades according to the ratio of 1:2:3, that is to say, divide these books into 6 volumes (1+2+3), among which junior, middle and senior grades account for 1, 2 and 3 respectively. The formula is

Low: 360× 1/6 =60 (Ben)

English: 360×2/6 = 120 (Ben)

Height: 360×3/6 = 180 (Ben)