This is pretty good math work. Take a look at the actual data below. Shares of Household Income by Quintile, 2011 Quintile Share Lowest quintile 3.2 Second q

This is pretty good math work. Take a look at the actual data below. Shares of Household Income by Quintile, 2011 Quintile Share Lowest quintile 3.2 Second quintile 8.4 Third quintile 14.3 Fourth quintile 23.0 Highest quintile 51.1