Answer:
Average time for West Middle was maximum.
Explanation:
Average time for a track meet for schools =
![\frac{\text{Time}}{\text{Distance}}](https://img.qammunity.org/2022/formulas/mathematics/high-school/pt8pa88cpeqf12jml2oiqp3bqxqstcxekj.png)
For Eastbay Middle,
Average time per mile =
![(42)/(7)](https://img.qammunity.org/2022/formulas/mathematics/high-school/7gvv7odonhymbszbyh60aj4qjc0ll6jp30.png)
= 6 minutes per mile
For Northwest Middle,
Average time =
![(25)/(5)](https://img.qammunity.org/2022/formulas/mathematics/college/o6viyzbtr9n6voqp2mgi7dgxb52lwapa2a.png)
= 5 minutes per mile
For South Central Middle,
Average time =
![(28)/(4)](https://img.qammunity.org/2022/formulas/mathematics/high-school/3kmpyi3brpzxd8uf9pt7y3l2bj53xhy5zk.png)
= 7 minutes per mile
For West Middle,
Average time =
![(48)/(6)](https://img.qammunity.org/2022/formulas/mathematics/high-school/bklwcl1cpt37wikp6k7qua4l9ypxw760hw.png)
= 8 minutes per mile
Therefore, average time for West Middle (8 minutes per minute) was maximum.