The art teacher, Mr. gonzalez, is preparing for a project. in order for students to have the correct supplies, Mr. gonzalez needs 10 times more markers than pieces of construction paper. he needs the same number of bottles of glue as pieces of construction paper. the number of scissors required for the project is half the number of pieces of construction paper. if Mr. gonzalez collected 400 items for the project, how many of each supply did he collect?