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标题: 2 JJ question [打印本页]

作者: happygmat    时间: 2002-11-6 10:13     标题: 2 JJ question

1. What is the value 20% less than 200.

2. 有二个帐户个有2400元,每个帐户有自己独立的简单年利率,问:一年之后二帐户利息的差为多少?B
A)一个帐户的利率是另一个地3/5
B)二者的利率差为2个百分点

1. my answer is: 160, is it correct?

2. why B? Is 利息的差 same as 利率差? but still can get the real value, right?
作者: jackco    时间: 2002-11-6 11:14

1. 0.8x = 200    x=250  
2. 2400*2/100=48  48 is a real value.
作者: happygmat    时间: 2002-11-6 11:36

thanks, but I thought the value 20% less than 200 is: x=0.8(200)?
作者: tongxun    时间: 2002-11-6 12:45

1、160
2、2400*X% -2400(X%-2%)
作者: happygmat    时间: 2002-11-6 13:36

thank you, tongxun




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