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标题: help! one math problem [打印本页]

作者: sweatfly 时间: 2006-10-4 08:06 标题: help! one math problem

有个DS题目，说某人6年前在A，B帐户存了一笔钱，都是SIMPLE INTEREST的。。A是每年3%，B是4%，之后就再没存过也没取过。问A的总利息是不是大于B的？

条件1：A存款比B多1000

2：去年A的利息所得是10元

if choose C, the balance of account B will be negative. why? so i think the answer is wrong.

作者: assurance 时间: 2006-10-4 14:24

a_{10= 1/1024 这个记住就行了}

_{不是每道题目非要正儿八经推出来，有时候技巧也重要。}

作者: sweatfly 时间: 2006-10-9 13:15

This problem is not the type of what you said.If choose C, we can confirm the interest of account A is bigger than that of account B, but this time the balance of B is negative that seems not reasonable.

作者: assurance 时间: 2006-10-10 06:45

条件 2：去年A的利息所得是10元.

THE 2ND CONDITION SHOULD BE: 去年A的利息所得是150元.

ALSO, BE CAREFUL, THE QUESTION I SAW IS: THE CURRENT MONEY(PRINCIPAL+INTEREST) A GREATER B?

作者: sweatfly 时间: 2006-10-12 07:04

many  thanks !!!!

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