see above link for the question.
In schweser notes Reading 29, the blue box example on TDA vs TEA, the principle amount used to calculate the FV of TEA account is after tax of $3000 = ( $4000 x (1-0.25)).
But in the module quiz 29.4 question 2, the principle used was not tax, the solution used the full amount of 100,000 euro.
So how do we know if we should use pre tax or after tax amount when calculating FV for a TEA?