chapter
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Th ~' eXa d · ()en 0 =---, an we have, J>3', If (xa-xh ) >0.I eXh

But Xa>Xh , •• 3>3', if e>I. Similarly, 3< 3', if e< I.

,That is to say, proportionate additions to all incomes diminish inequality, and proportionate subtractions increase it.