Respuesta :

alright here's the breakdown:

it said every 4 miles Vanessa jogged, Cody jogged 3 miles.

so

Vanessa jogged 1 mile

that means 

Cody jogged .75 of a mile ( or 75% of 1 )

because

Cody will always jog 75% of  how much Vanessa joged 

so say that

Vanessa jogged 50 miles

all you do is take 75% of how much 
Vanessa jogged

and that should be how much Cody joged 

hopes this helps!
Cody jogs 0.75 miles for every 1 mile Vanessa jogs