Explanation:
Data given in the question
Collection made for haircuts = $450
Equipment Depreciates value = $30
Sales taxes = $40
Wages = $270
New equipment = $110
Home collection = $270
Income taxes = $80
So by considering the above information, the calculation is as follows
Gross domestic product is $450
Net national product is
= Gross domestic product - depreciation
= $450 - $30
= $420
National income is the same as net national product so it is also $420
Personal income is
= National income - new equipment - sales taxes
= $420 - $110 - $40
= $270
And, the disposal personal income is
= Personal income - income tax
= $270 - $80
= $190