小东的爷爷积攒了5000元钱打算存入银行

  • 时间:2020-05-14 13:29:37
  • 分类:数学世界
  • 阅读:159 次

数学题:小东的爷爷积攒了5000元钱,打算存入银行。他打听到,整存整取的两年期第年利率为4.68%,存一年期的年利率为4.14%。存两年期的显然比一年期的年利率要高些。但又想,存一年到期后再续存一年,可以利加利,利滚利。要是利息更多一些,是存一年的好,还是两年的好呢?你能把这其中的道理说出来吗?

数学题解答:

一、直接存两年期。5000+5000*4.68%*2=5468(元)。

二、存一年,再存一年。5000+5000*4.14%*1=5207(元),5207+5207*4.14%*1≈5422.57(元)。

5468>5422.57

答:直接存两年利息多一些。

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