Answer:
The answer is $500
Step-by-step explanation:
Disposable income is the income left after deduction of tax and other statutory deductions. It is income that a worker receives.
Increase in tax reduces disposable income and vice-versa.
Disposable income increases by $2,000 while spending increases by $1,500.
In finance, money not spent is saved. So we have
$500($2,000 - $1,500) as the amount saved.
$500 is the increase in saving.