Traditional $401($k$)$ versus Roth $401($k$)$

Sharon has decided to contribute to a savings program. She can open a traditional $401(k)$ or a Roth $401(k)$ and has determined that she can afford a

$$12,000$ contribution. Sharon's salary is $$58,500$ per year, and she is in the $25\%$ tax bracket.

If Sharon decides to go with a traditional $401($k$),$ her contribution amount will be

And the amount offset via a reduced tax bill will be $,.$

If$,$ instead, Sharon decides to go with a Roth $401(k),$ her contribution amount will be

And the amount offset via a reduced tax bill will be

Assuming all the same facts, suppose that Sharon decides to open both $401(k)$ plans, splitting what she can afford to contribute equally between both

plans.

Under this scenario, Sharon's contribution amount will be

And the amount offset via a reduced tax bill will be

When Sharon retires, which plan's monies will she be able to exclude from taxable income?