The government takes out 6.2% for Social Security, 1.45% for Medicare, and 15% for federal income tax. Alex does not live in a state with state income tax. What is her after-tax monthly income?

92.35% or 77.35%

Step-by-step explanation:

We have that the total salary represents 100%.

After taxes in a city where all taxes apply would be:

100% - 6.2% - 1.45% - 15% = 77.35%

Which means, that in this case, the salary after tax would be 77.35%.

In Alex's case, there is no state income tax, if this tax is the same as the federal income tax, his income would be:

100% - 6.2% - 1.45% = 92.35%

That is, 92.35% of their original salary.

If these two taxes are different, your income would be 77.35%.