Katrina is decorating her room with three posters of her favorite bands. Each poster measures $18$ inches in width. Poster 2 is horizontally centered on her wall, as shown below.

Asquare parking lot has 6,400 square meters what is the length in meters

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?