In construction , floor space is given for staircase. If a second floor is 270cm above the first floor and the contractor is using steps with 18cm rise and 30cm treat , how long will the railing goes from the first floor to the second floor

The four students in the table below each recorded the time and distance traveled while exercising. exercising distance (miles) time (minutes) gia 2 30 harris 5 50 ian 3 40 jackson 4 80 which list ranks the students from fastest walker to slowest walker? jackson, gia, ian, harris harris, jackson, ian, gia harris, ian, gia, jackson jackson, harris, ian, gia