作者ken22154 (电脑回来了!)
看板GMAT
标题[计量] OG 11th 数学129题
时间Tue Oct 16 19:08:24 2007
On a recnet trip, Cindy drove her car 290 miles, rounded to the nearest 10
miles, and used 12 gallons of gasoline, rounded to the nearest gallon. The
actual number of miles gallon that Cindy's car got on this trip must have
between
我选答案 295/12.5 and 285/11.5
正确答案:285/12.5 and 295/11.5
可否请达人深入浅出解释一下,为什麽要这样配?
PS. GWD的数学难度高很多,但OG真正的难题没几题,做OG做的有点心虚
写OG的数学真的够用吗?但GWD的数学又没解释,有些错了就会错的不知所云
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 220.134.114.149
1F:推 chianggogo:请问你是哪套GWD? 31套的CD有详解 10/16 19:17
2F:推 ken22154:我有31套的GWD,请问CD的详解在哪阿?简体字太多找不大到 10/16 19:23
3F:推 ken22154:我找到了,感谢~ 10/16 19:30
※ 编辑: ken22154 来自: 220.134.114.149 (10/17 10:44)