Answer:
Gross Domestic Product
= $500
GDP is the final value of goods and services. The haircut is valued at $500 so is GDP.
Net National Product:
= GDP - Depreciation
= 500 - 80
= $420
National Income
= $420
This is the income that a resident of the country earns and $420 is what Barry earned in net income.
Personal Income
= National income - Retained earnings
= 420 - 120 - 50
= $250
Disposable Personal Income (Dollars)
= Personal income - income taxes
= 250 - 90
= $160