A tailor trims 4feet from opposite edges of a square piece of cloth and 5 feet from the other two edges. If 120 square feet of cloth remain , what was the length of a side of the original piece of cloth?
a 12 b 20 c 24 d 26 e40
答案是b20 我不太理解这个是怎么割的,这块布,看了答案还说不懂作者: tongxun 时间: 2003-7-9 22:42
I do not agree with you margland,because there is no such word as respectively in the question to illustrate cutting 5 feet in two sides。Would you mind copying the answer here, giving us an opportunity to discuss this question and thus figure it out?作者: northying 时间: 2003-7-11 10:55
还是正方形裁成长方形。。。
我也希望看原版英文的解释。作者: fengqiwu 时间: 2003-7-12 09:08
from opposite edge(s) 和 from the other two edge(s)应该是指四个边吧,如果这样,则应为(x-8) (x-10)=120 ,正方型裁成长方形作者: northying 时间: 2003-7-12 21:14
clever
Thanks
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