<PRE><B>Question 253779</B>
Let the earnings of Jill be x.
Given, Linda earned twice as much as Jill.
Therefore the earnings of Linda = 2x 
And, Susan earned three times as much as Jill.
Therefore the earnings of Susan = 3x 
Given, the earnings of Susan = $ 240
                          3x = 240
                           x = 240/3
                           x = 80
Therefore the earnings of Linda = 2x = 2*80 = $ 160
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