天山 7-11

odie · 发表于 2004-12-26 19:56:00

Q11: 圖貼布上來ㄚ

Note: Not drawn to scale.
A rectangular picture is surrounded by a boarder, as shown in the figure above. Without
the boarder the length of the picture is twice its width. If the area of the boarder is 196
square inches, what is the length, in inches, of the picture, excluding the boarder?
A. 10
B. 15
C. 30
D. 40
E. 60

Please give me a help!! thanks!!

charmant · 发表于 2004-12-26 20:27:00

没图怎么办啊

charmant · 发表于 2004-12-26 20:29:00

关键是不知道boarder有多厚

odie · 发表于 2004-12-27 12:06:00

the width of boarder=2

sorry!! I can't paste the picture!

charmant · 发表于 2004-12-27 13:11:00

[attachimg]24192[/attachimg]

为了节约空间，颜色只能差一些了，不知能否说清楚

我Guess图应该是这样的吧

luzhihong1978 · 发表于 2005-4-19 13:40:00

设原rectangular长为xy,宽为x

y=2x

(y+4)(x+4)-xy=196

求解,x=15,y=30

luzhihong1978 · 发表于 2005-4-19 13:44:00

sorry,有点小错误,长为y

channing76 · 发表于 2005-5-3 19:56:00

以下是引用luzhihong1978在2005-4-19 13:40:00的发言：

设原rectangular长为xy,宽为x

y=2x

(y+4)(x+4)-xy=196

求解,x=15,y=30

mayce · 发表于 2006-7-18 16:39:00

boarder 是不是蓝色区域部分呢？

mayce · 发表于 2006-7-22 18:46:00

天山 7-11

天山 7-11

本帖子中包含更多资源

所属分类: GMAT考试

正在浏览此版块的会员 ()