PHP/Maths Percentage of Percentage : <p>I am working out what the changes of a horse winning a race is from the previous records of each horses.</p>

<p>Horse 1 has won 5% of his races</p>

<p>Horse 2 has won 7% of his races</p>

<p>Horse 3 has won 12% of his races</p>

<p>Now if 3 horses are running in this final race, how do I split 100% between these 3 horses?</p>
