P225 第14题
100,000 Asset invested equally to Taxable Account and TDA.
TDA ~ Stock ~ 7% before-tax return ~ 40% tax rate
Taxable Account ~ Bond ~ 4% before tax return ~ 40% annual tax rate
Calculate the portfolio value after 20 years.

再算TDA的时候，答案给出
FVIF = (1+r)^n * (1-Tax) = 1.07^20 * (1-0.4)
为什么最后不加上Tax Basis * Tax?
题目有里面有些Cost Basis is equal to market value on asset held in taxable account.