Let's denote the location of the elevator relative to the ground level as "x". Since the elevator is initially two floors below ground level, we can represent its starting position as -2. As it goes up 5 floors, its position relative to the ground level increases by 5. Therefore, the equation that models the location of the elevator relative to ground level is:
x = -2 + 5
Simplifying the equation, we get:
x = 3
So, the elevator ends up 3 floors above ground level.