$63,000
Explanation:
Given that the total profit is $90,000 per year.
The average federal tax rate is 24% and the state tax rate is 6%.
So, total tax rate = 24% +6% =30%
Total taxable amount = 30% of $90,000
=(30/100)x 90,000=$27,000
The remaining amount = $90,000 - $27,000 = $63,000
Hence, I will keep $63,000 of my profit.