在做STREAM 上的PRACTICE 题时，发现有一题的答案不太让我了解。题目是
Over the summer break you worked at the BBQ Factory on Link Drive, Glenfield.
You have managed to save total after-tax earnings of $3,500 and have decided to invest
this money in a two-year time deposit to help you pay off your student loan when you
graduate from university. You are evaluating the terms offered on three time deposit
accounts. Given the terms described below, which account yields the highest effective
rate of return? Assume a 365-day year and round the answer to the nearest 0.001%.
ANZ: 3.75% compounded semi-annually.
BNZ: 3.70% compounded monthly.
Westpac: 3.67% compounded daily.
算出来的答案
ANZ: re ≈ 3.785 %.
BNZ: re ≈ 3.763 %.
Westpac: re ≈ 3.738 %.
相比较 ANZ的R 比较高 应该最效率 可是答案却是
Thus, the BNZ account is preferred
求高手解答.作者: -U- 时间: 2010-3-14 16:08:44