The odds against Rainbow winning the race are 17:5.  Brian bets $120 on Rainbow to win and Rainbow does win the race.

How much money does Brian win? What was the probability that Rainbow was going to win the race? 

2 answers

Lay/Aniya/Brianna -- please use the same name for your posts.
pr(win)=17/22
How much does he win?
win=120/(17/22)=120*22/17
(minus fees and track takings)