How many floors are in my apartment anyways? Well, the highest point is 20 floors above the ground. The lowest point is 0 floors beneath the ground. To find the difference you have to do 20-0=20. The difference between the highest point and the lowest point is 20 floors.
Today I walked-3x2=-6 from the gym or the 18th floor. My final destination was 3 floors beneath my apartment or on the 12th floor. My location would be-3 floors in comparison to my apartment.
I walked faster two days ago. Two days ago I walked down 100 feet in 15 minutes.-100/15=-6.66 feet per minute. Yesterday, I walked down 84 feet in 12 minutes. 84/12=7 feet per minute. I walked faster two days ago.