The difference between a roth ira and a traditional ira is that in a roth ira taxes are paid on the income that is contributed but the withdrawals at retirement are tax-free. in a traditional ira, however, the contributions reduce your taxable income, but the withdrawals at retirement are taxable. assume you plan to devote $5,000 to retirement savings in each year. you will retire in 30 years and expect to live for an additional 20 years after retirement. a. assume the before-tax interest rate is 5%. what will be your after-tax 20-year retirement consumption stream if you choose to save in a traditional ira? assume your tax rate is fixed at 30%. (round your answers to 2 decimal place.)