lucky 15 Bet Formula.
The formula for settling for all multiple bets (patent,lucky 15,lucky 31 etc) is this.
1)find the basic factors -BF is price eg. 2/1 +1=3 (written as a decimal)
So 7/2 would be 4.5 Etc
2)Add 1 to all then multiply the winners to get total.
3)Minus 1 from total
4)Multiply by stake
Example- 4 winners in a £1 lucky 15 at 3/1 – 7/1 – 5/2 and evs
Basic Factors (+ 1 ) are; 5, 9, 4.5, 3
5 x 9 x 4.5 x 3 = 607.50
607.50 –1 = 606.50
606.50 x stake (£1) = £606.50
If stake was £0.50 would be 606.50 x 0.50 = 303.25
if stake was £0.20 would be 606.50 x 0.20 = 121.30
If only 3 won you would only use the 3 basic factors,etc.
Then add your bonus depending on which bookies you use :-