Question

An elevator starts at the main floor and goes up 8 floors. It then goes back fown 5 floors. What integer represents elevator final position with respect to the main floor?

Answer 1

The answer is 3. He ends up on the 3rd floor.

Answer 2

integer 3 represents elevator final position with respect to the main floor.

Explanation:

Given : An elevator starts at the main floor and goes up 8 floors. It then goes back down 5 floors.

To find : What integer represents elevator final position with respect to the main floor.

Solution : We have given

Elevator starts at the main floor and goes up floors = + 8 ( for up).

Then goes back down floor = - 5 ( - sign for down).

Final position : 8 - 5 = 3 .

It will reach at 3 floor from the main floor .

Therefore, integer 3 represents elevator final position with respect to the main floor.