Richie,
Im not much into writing in detail but below is a sample to have a basic idea of percentages based on odds in relation to your betting choices..
You were not clear in what ranking your betting choices were so I've just dug up the fav and 2nd betting choices..
This was written by a gentleman by the name of Douglas J. Railey who was a researcher and race fraud investigator and he collaborated with Cynthia Publishing for this book... its called "Exacta Expose"...
Hope it helps...
Jess