Answer: See explanation
Step-by-step explanation:
a. gross domestic product
The GDP is $400 which is the money that Barry collects for haircut.
b. net national product
Net National Product:
= GDP – Depriciation
= $400 - $50
= $350
c. national income
The national income is the total income that the residents of the country earns and this will be same as Net National Product which is $350
d. personal income
Personal income:
= National income – Retained earnings
= $350 - $100 - $30
= $220
e. disposable personal income
Disposable personal income:
= Personal income – Personal tax
= $220 - $70
= $150