Because the “value” of moving each investment up in time by a year is an extra year’s interest throughout, we can just add that interest into the final growth factor, increasing the final $45.60 growth factor by 10%, or multiplying it by 1.10, to get a factor of 50.16, yielding a required beginning-of-year investment of $1,994 over the next 18 years.
這是什麼意思？
年終結算時把結算利息直接在年初投入計息報酬？
