Question 1136764
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Let x = Gordon.

Then Sarah = 3x  and  Pip = 2*(3x) = 6x.


The total is


    x + 3x + 6x = 20,   or

    10x = 20  ===================>  x = 20/10 = 2.


<U>ANSWER</U>.  Pip get 6x = 6*2 = 12.
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Solved.