20:37
Ahmed is riding the elevator in a building. The building has floors above and below ground level. Ahmed uses the
expression below to describe his movement.
6+(-8)
Which statement could describe Ahmed's movement?
Ahmed started 6 floors above ground level, then he went down 8 tidors.
Ahmed started 6 floors above ground level, then he went up 8 floors.
Ahmed started 6 floors below ground level, then he went up 8 floors.
Ahmed started 6 floors below ground level, then he went down 8 floors.
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