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14 May, 05:40

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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Answers (1)
  1. 14 May, 09:03
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    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.
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