probability

(10,000)/(15)²

(10000)/(15)²+(12000)/(21)²+(20000)/(25)²=

 

(12000)/(21)²

(10000)/(15)²+(12000)/(21)²+(20000)/(25)²=

 

(20000)/(25)²

(10000)/(15)²+(12000)/(21)²+(20000)/(25)²=

Have it set up i  just need help solving it