Final answer:
To calculate the total income tax, you must sum up the tax for each income portion based on the respective rates. In this scenario, the total income tax on a $75,000 income would be $15,000.
Step-by-step explanation:
To calculate the total income tax based on the given brackets:
- Tax on the first $25,000 at 10%: $25,000 x 0.10 = $2,500
- Tax on the next $25,000 at 20%: $25,000 x 0.20 = $5,000
- Tax on the final $25,000 at 30%: $25,000 x 0.30 = $7,500
The total income tax would be the sum of these amounts:
$2,500 + $5,000 + $7,500 = $15,000