4.86 is the answer to you're question.
Option B is correct
Why
3x=21
3(7) =21
21=21
Step-by-step explanation:
Answer:
5 min person wit 10 min person
5 min person wit 20 min person and 5 min person back
5 min person wit 25 min person and 5 min person back
5 min person need to slow down ea. time
I think it's something like a mile or so, maybe a mile and a half. Sorry if I'm wrong.
