问题如下：
Tom has $100,000 stocks and $100,000 bonds. The $100,000 stocks are in the tax-deferred account and the $100,000 bonds are in the taxable account. We assume that:
1. The stock will provide 6% annually return.
2. The bond will provide 3% annually return.
3. Stock returns in taxable will be taxed as whole deferred capital gains at a 15% percent rate. Interest income in taxable account is at 30 percent for each year.
4. Contributions in Tax-deferred account are not taxed, but withdrawals from this account will be taxed at 30 percent.
5. Cost basis is equal to 1
Calculate the post-tax value of Tom’s investment after 15 years.
选项：
A.$304,339 B.
$369,076
C.$209,876
解释：
A is correct.
考点：Types of investment accounts
解析，我们先算得放在交税账户中的债券投资在15年后的终值。
接着我们继续算得放在递延账户中的股票投资在15年后的终值。
最后我们把两个资产账户的终值相加，便得到Tom15年后投资的总市值，即
136580 + 167759 = 304,339
老师您好。这道题目中已经有明确描述：3. Stock returns in taxable will be taxed as whole deferred capital gains at a 15% percent rate. Interest income in taxable account is at 30 percent for each year. 请看高亮部分，如果我没理解错的话应该是说把股票的每年收益最后当作一整个的deferred capital gain，所以最后应该要减去15%的税啊。我并不认同这句话的描述是说15%是taxable账户的税率，因为他已经明确的指出了deferred的状态。麻烦老师解答一下谢谢。
