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Coach DeCaro records the cross country runners’ times compared to their personal best times.

3K Times
Runner
Time compared to personal best
Gregor
+5.6
Hiroki
–11.6
Isabelle
+3.2
Juan
0
Karen
–5.2

Which list correctly orders the runners from MOST improved to LEAST improved?
Juan, Hiroki, Karen, Isabelle, Gregor
Juan, Isabelle, Karen, Gregor, Hiroki
Hiroki, Karen, Juan, Isabelle, Gregor
Gregor, Isabelle, Juan, Karen, Hiroki

1 answer

To order the runners from MOST improved to LEAST improved based on their times compared to their personal best times, we need to consider the values given. The negative values indicate an improvement (faster time), while the positive values indicate a slower time compared to their personal best.

Here are the times compared to their personal bests:

  • Gregor: +5.6 (slower)
  • Hiroki: -11.6 (improved)
  • Isabelle: +3.2 (slower)
  • Juan: 0 (no change)
  • Karen: -5.2 (improved)

Now, let's rank the runners from MOST improved (largest negative value) to LEAST improved (largest positive value or no change):

  1. Hiroki: -11.6 (most improved)
  2. Karen: -5.2
  3. Juan: 0 (no change)
  4. Isabelle: +3.2 (least improved)
  5. Gregor: +5.6 (least improved)

So the correct order from MOST improved to LEAST improved is:

Hiroki, Karen, Juan, Isabelle, Gregor.

Thus, the corresponding answer among those given is: Hiroki, Karen, Juan, Isabelle, Gregor.