同学你好，题目中给出了investment account tax rate是20%。 Briscoe expects a tax rate of 20% to apply to the Tracys’ withdrawals from the investment account. 说明这是一个TDA账户。如果60岁退休，那么pension income不能满足expense的部分，也要从investment account中来出。所以不管60岁还是65岁，都是从investment account里面拿钱出来。
