Answer: 14.5%
Explanation:
The after tax return is calculated by the formula:
= Before tax return * (1 - federal tax) * (1 - State tax)
As we have the after tax return, we should work on the before tax:
9% = Before tax return * (1 - 34%) * (1 - 6%)
9% = Before tax return * 0.6204
Before tax return = 9% / 0.6204
= 14.5%