一道GMAT的题目.我很无语Q11:A rectangular picture is surrounded by a b
一道GMAT的题目.我很无语
Q11:
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
Q11:
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
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的确无语.除非给出框的宽度,否则本题没有唯一解.
1年前 追问
8
有没图没关系，题目写得很清楚。 不给出框的宽度的话，无论画的长宽是多少，总能找到一个框，使得框的面积=196
哦？原题的图上是给出了框的宽度的（宽度=2）？ 那么这题就有解了： 设画的长为2x, 宽为x，则：(2x+4)(x+4) - 2x^2=196 解得：x=15 即画的长度为30，选C
嗯嗯，大框框的边 到 画的边 的距离是2
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你能帮帮他们吗