Brett took elevator A from the 6th floor to the lobby, the 0 floor. His nonstop tip took 9 seconds.

Bragg took elevator B from the 3rd floor to the pool on the 11th floor. Bragg nonstop trip took 16 seconds.

Sarah took elevator C from the 1st floor to the 10th floor. Her nonstop trip took 12 seconds.

Which elevator is the fastest?
Settle this with tables, graphs, and equations.

Question

11-12-2015
Mathematics

contestada

Brett took elevator A from the 6th floor to the lobby, the 0 floor. His nonstop tip took 9 seconds.

Bragg took elevator B from the 3rd floor to the pool on the 11th floor. Bragg nonstop trip took 16 seconds.

Sarah took elevator C from the 1st floor to the 10th floor. Her nonstop trip took 12 seconds.

Which elevator is the fastest?
Settle this with tables, graphs, and equations.

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AL2006 AL2006 · Answer 1 · 2015-12-11T17:51:43+01:00

Brett traveled (0 - 6) = 6 floors down, in 9 seconds.

   6/9 = 2/3 sec per floor.

Bragg traveled (11 - 3) = 8 floors up, in 16 seconds.

      8/16 = 1/2 sec per floor.

Sarah traveled (10 - 1) = 9 floors up, in 12 seconds.

   9/12 = 3/4 sec per floor.

Bragg's trip was the fastest.
Sarah's was the slowest.