2 JJ question

happygmat

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?

jackco

1. 0.8x = 200    x=250  
2. 2400*2/100=48  48 is a real value.

happygmat

thanks, but I thought the value 20% less than 200 is: x=0.8(200)?

tongxun

1、160
2、2400*X% -2400（X%-2%）

happygmat

thank you, tongxun