You put money into an account that earns an 8 percent nominal interest rate. the inflation rate is 5 percent, and your marginal tax rate is 10 percent. what is your after-tax real rate of interest?

2,10%

Explanation:

First, it's necessary to deduct the taxes paid from the nominal rate of 8%.  

Nominal Rate 8% * 0,90 = 7,20%  

Then to the result of the interest rate after taxes, we deduct the inflaction rate:  

After Tax Rate : (1+7,2%)/(1+5%) -1 = 2,1%  

you will have $2593.74 in 10 years if you set aside $1,000 at 10%

you will have $9321.91 in 20 years if you set aside $2000 at 8%

you will have $1469.32 in 5 years if you set aside $1000 at 8%

you will have $1296.87 in 10 years if you set aside $500 at 10%

you will have $239.66 in 15 years if you set aside $100 at 6%

you will have $4660.96 in 20 years if you set aside $1000 at 8%

answer; post closing trial balance;