Question

Help Me Out pls :,)

An elevator begins on the ground floor of a hotel. It travels up 18 floors, down 9 floors, up 5 floors, and down 3 floors. What integer represents the CHANGE in the number of floors it must now make in order to return to the ground floor?

Answer 1

Answer: 11

Step-by-step explanation: Based on the given conditions, formulate: 5+18-3-9

Calculate the sum or difference: 23-3-9

Calculate the sum or difference: 20-9

Calculate the sum or difference: 11

Answer 2

I think it is 11

so you go up 18, then down by 9, then up 5, then down 3, so basically, it is (18-9)+(5-3), and if you do the parentheses you get 9+2 and that is 11 =]