[問題]OG(11th)PS-Q175

[凱薩琳]

A square countertop has a square tile innlay in the center , leaving an untiled strip of uniform width around the tile. If the ratio of the tiled area to the untiled area is 25 to 39, which of the following could be the width , in inches, of the strip?

I.1
II.3
III.4

(A) I only
(B) II only
(C) I and II only
(D) I and III only
(E) I, II ,and III

Ans:E

[scujean]

同問 盼有解答的人回覆一下

[Kyo]

確定一下題目對不對~~

如果是25 to 36，就會是那個答案喔。

[scujean]

cd's ans
题目的意思很简单，说的是内正方形和内外正方形面积差的比例是25:39，那么内正方形和外正方形的面积比就是25：64，边长比是5：8

题目问内外正方形之间的部分的宽度是多少？自然是什么数字都可以啊～只要内外边长保持同比例变化，都满足5：8就可以了

[凱薩琳]

題目沒錯喔...謝謝回答