According to the knowledge network of college entrance examination, Nanjing University of Posts and Telecommunications, in order to facilitate the standardized management of students' apartments, selects a production enterprise with high reputation among the excellent enterprises recommended by Jiangsu Provincial Department of Education and Provincial Fiber Inspection Institute through bidding, and provides high-quality and low-cost complete sets of bedding and other daily necessities for freshmen to buy when they enter school (optional self-provided, the size of student beds is 200cm*85cm). Nanjing University of Posts and Telecommunications freshmen's bedding costs 525 yuan each. The variety and quantity are as follows: mattress: size 0.9m×1.9m. quilt: size1.5m× 2.0m. pillow: size 0.4m× 0.6m towel quilt: size1.5m× 2.0m. sheet:. The size is 0.9m×1.9m. ..