From the beginning of cross country season to the end , trisha reduced her time by 17 % , anchara reduced hers by 4/25 , and juanita reduced hers from 16: 00 to 13: 30 . who reduced their time by the greatest percent ?

20

step-by-step explanation:

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m