Hi I need help with this question

If I invests $200,000 in abond that pays 6 percent interest.or $200,000 in a bond that pays 8 percent interest and my marginal tax rate is 25 percent.

1) What is the after tax rate of return for the 6% bond?

2) How much explicit tax will I pay on the 6% bond?

3) How much Implicit tax will I pay on the 6% Bond?

4) How much explicit tax will I have on the 8% Bond?

5)What is the after tax rate on the 8% bond?