Best Book % - Info Required Please

[wyldey]

Hi, I've been a (very) amature gambler for a while now but i have often wondered what the Best Book percentages mean.
I've been told a few things but still do not understand.
I'm guessing the higher the %, the more in favour of the bookie the race is.
Is that correct?
Any help would be much appreciated!!

Many Thanks

wyldey

[Win2Win]

If your backing, your looking for a book% that is lower than 100%, in theory this would mean you can back them all and profit, but in reallity, you need to be a bot.

Above 100% gives a theoretical profit to the bookie, but not always as it depends on how much they take per horse.

If your laying, it is the opposite way round.

[presto]

that's right - the higher the % the more in favour of the bookie the race is,

at the bookies the book is usually 110%+ this means that the bookies will 'roughly' payout £100 for every £110 they take in bet's (or profit by 10%).

if you look on betfair (use link on site), the book is usually around the 100% mark, these show the 'true odd's' of each horse. and offer better value than that of a bookie.

anything under 100% means that you can back every selection for a guaranteed profit.

[wyldey]

Thanks for your help.

Also, how do you work out the percentage?

I was told that 1/1 = 50% of the book and that from that you can work out the rest.
urm... how?
I think i heard somewhere 1/2 was 16% more than 1/1. So that would make 1/2 = 66%? right?
Then 2/1 must be 16% less. 2/1 = 34%.
Am i going along the right lines?
Surely it can't keep that pattern though.
What would3/1, 4/1, 5/1, 6/1 etc... be?

[MarcusMel]

If odds of A/B ie 1-2 so A=1 and B=2

Percentage =100*B/(A+B)

so percentage 1-2 is 100*2/(1+2)=66.66%

[wyldey]

big thanks to you all!