What is the percentage of income received by the upper two quintiles on line L?

Upper Two Quintiles

Refers to the top 40% of the income distribution in a society, often considered the higher income groups.

Line L

A specific reference to a theoretical line or concept, often used in the context of graphs or models in economics or sciences. (If this isn't a real reference, this would be NO.)

Income Received

The total income or earnings received by an individual or entity within a specific period, including all sources.