Calculating horses winning percentages .
$ 2 odds---50 %
$ 2,5------- 40%
$ 3----------33,33 %
$ 3,5--------28,57 %
$ 4-----------25 %
$ 5-----------20 %
$ 6-----------16,66
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100/2=50%
100/2,5=40%
100/3=33,33
100/3,5=28,57%
100/4=25%
100/5=20%
100/6=16,66%
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100 divided to any odds