How do the Oligarchy of ancient greece keep their power?

Throughout history, oligarchies have often been tyrannical, relying on public obedience or oppression to exist. ... In his "Iron law of oligarchy" he suggests that the necessary division of labor in large organizations leads to the establishment of a ruling class mostly concerned with protecting their own power.

Explanation:

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step-by-step explanation:

100%     = 120

1%= 120/100=   1.2

9%   = 1.2 x 9=     10.8

10.80 to the 120 to get $130.80