Schumacher to win a race is 8/13 with Skybet
NOT to win a race with William Hill is 3/1. You could bet on both and guarantee yourself a return, but you'd have to invest a lot to get something decent back, but you couldn't lose!
Dude, I can't seem to work out how much I have to bet on each to come out with a guaranteed profit. My sums tell me that this is not a guaranteed profit.
Can you tell me the minimum amounts I have to bet to guarantee a profit?