Question 1106286
<pre>
x = P(E wins)
P(C wins) = 2x
P(D wins) = 2x

P(E wins OR C wins OR D wins) = x + 2x + 2x = 1
                                         5x = 1
                                          x = 1/5

P(E wins) = x  = 1/5
P(C wins) = 2x = 2(1/5) = 2/5
P(D wins) = 2x = 2(1/5) = 2/5 

Edwin</pre>