Can someone with a couple econ questions? what percentage of total income does the highest fifth of the population receive? table included

what percentage of total income does the lowest quin
tile of the population have? and lastly what does both the straight and curved line represent in the graph?

The highest fifth quin tile receives 50.1% of the total income
The lowest quin tile receives 3.5% of the total income
The straight line on the graph represents the percentages of income each quin tile would receive if the total income was distributed evenly, while the curved line shows the actual distribution of the total income to each quin tile.

1+1=22×1=22-1=11-1=1duh