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标题: [求助]烦请XDJM们帮忙看看这一题，急！谢谢 [打印本页]

作者: lori 时间: 2005-11-20 11:25
标题: [求助]烦请XDJM们帮忙看看这一题，急！谢谢

Q14:

Box W and Box V each contain several blue sticks and red sticks, and all of the red sticks have the same length. The length of each red stick is 18 inches less than the average length of the sticks in Box W and 6 inches greater than the average length of the sticks in Box V. What is the average (arithmetic mean) length, in inches, of the sticks in Box W minus the average length, in inches, of the sticks in Box V?

A. 3

B. 6

C. 12

D. 18

E. 24

请着重讲一下解题思路和过程，谢谢！

作者: happyfish0517 时间: 2005-11-20 16:34

晕啊~lz是英文没看懂把~题目很简单啊。告诉你红棍子每根都一样长，且每根红棍子的长度比w盒中的平均长度短18英寸，比v盒子里的平均长度长6英寸，问w和v的平均长度之差？

那不就是6+18=24选E阿~晕倒~哪里不懂呢？没有解题思路...看懂题目就做出来啦~

另外，请把题目来源和题号在帖子标题中注明一下，多谢合作！

作者: lori 时间: 2005-11-20 17:02

天啊，疯了，我把题意看错了。。。哭死，还有两天就考试了，这种状态怎么办啊？救救我吧！

哦，题目出自GWD3

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