Question

ms. smith went to work. she arrived at the building and took the elevator in the lobby (0 floor) and moved up to her office. later, she took the elevator 7 floors up for a meeting. From there, she took the elevator 9 floors down to the cafeteria. after finishing her snack, ms. smith took the elevator 8 floors down to the lobby and she went home. at what floor does ms. smith work?

Answer 1

Let's break down the elevator movements:

Ms. Smith arrives at the building and takes the elevator from the lobby (0 floor) to her office.

She takes the elevator 7 floors up for a meeting.

From there, she takes the elevator 9 floors down to the cafeteria.

After finishing her snack, she takes the elevator 8 floors down to the lobby and leaves the building.

Starting from the lobby at 0 floor:

Up 7 floors for the meeting.

Down 9 floors to the cafeteria.

Down 8 floors to the lobby.

The net movement is 7 - 9 - 8 = -10 floors.

This means Ms. Smith's office is 10 floors above the lobby. Since the lobby is on the 0 floor, her office must be on the 10th floor.