请教PREP-PS1-48

展颜

A certain city with a population of 132,000 is to be divided into 11 voting districts, and no district is to have a population that is more than 10 percent greater than the population of any other district.  What is the minimum possible population that the least populated district could have?

 

(A) 10,700

(B) 10,800

(C) 10,900

(D) 11,000

(E) 11,100

求思路...谢谢

sheibiwosha

假设最少的那个区的人数是x

要使x最小，其他区都应该尽量大，所以其他区都应该是1.1x

那么总人数就是10个1.1x和1个x，也就是12x

所以x就是D

展颜

"a population that is more than 10 percent greater than the population of any other district"

主要是对这句话的理解

我设的最大的区是x, 最小的区是0.9x, 是其他区尽量大, 则有: 10.9x=132,000 => 0.9x=10899, 选c

是不是对原题理解错误了呢?

[此贴子已经被作者于2008-9-10 17:40:29编辑过]