Question 1150345
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<pre>

Let P(A) = x.


Then  P(B) = x  and  P(C) = 3x


Also   P(A) + P(B) + P(C) = 1,  i.e.


    x + x + 3x = 1

    
    5x         = 1

     x         = {{{1/5}}} = 0.2.


<U>ANSWER</U>.  P(A) = 0.2, P(B) = 0.2, P(C) = 0.6.
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Kindergarten level problem.