[求助]PREP P1-48

smallbunny

48. 

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

 

求助~

不晓得从何下手

SunnyApples

d？

我的笨办法：就假设有一个最小的为a，其余10个都是他的1.1倍，

(因为最大不超过1.1倍，所以如果和一定，其他每个数都取到最大，应该就能保证a最小)

然后和就是1.1a*10+a=12a=132,000 ，a= 11,000，d

不知道对不对哈

tigerszheng

我也是这么做的~

smallbunny

谢谢LS 两位..