Answer:
$20,000
Step-by-step explanation:
The computation of the discretionary income last year is shown below:
Discretionary income last year = Income - taxes paid per year - other expenses paid
= $72,000 - $30,000 - $22,000
= $20,000
We simply deduct the taxes and the other expenses from the income so that the discretionary income last year could arrive
Plus we do not considered the additional expenditure spent