Katie finished the race in 20.57s.
According to the question, it is assumed that Amy finished the race in 20.7s.
Let Katie finished the race in [tex]x[/tex] seconds.
Then, according to the given condition, Katie finished the race 0.13s before Amy means we have to subtract 0.13s from 20.7s.
To know how long the Katie take to finish the race we subtract 0.13s from 20.7s.
⇒ x = 20.7s - 0.13s
⇒ x = 20.57s
The value of x is 20.57s means Katie finish the race in 20.57s.
If Katie finished the race 0.13s before the Amy, then she take 20.57s to finish her race.
For similar questions, visit:
https://brainly.com/question/17475738
#SPJ9
