Tax is calculated using the formula:
Tax amount = (% Tax)
After-tax income can be calculated using the formula:
After-tax income = (1 - %tax / 100) * Income
We are given that:
% tax = 40%
Say for the income, this is only the amount needed for the Mercedes so, Income = $60,000
After-tax income = (1 – 40 / 100) * $60,000
After-tax income = $36,000