[問題]GWD10-17

[luluhsiao]

GWD10-17

In town X, 64 percent of the population are employed, and 48 percent of the population are employed males. What percent of employed people in town X are females?



Ans:B 25%

不懂為何??

[leg1110]

設total population有100人
employed people則有64人
因為48 (100x48%=48) 人被雇用是男性
所以16 (64-46=16)人為女性被雇用的人數
16/64 = 25%

[汪汪北鼻]

(64%-48%)/ 64%=25%

[micht]

可不可以請luluhsiao同學將此帖標題修改正確哩~感謝
http://www.formosamba.com/phpBB3/viewtopic.php?t=2358

[luluhsiao]

真是不好意思.. 因為我是新手還不大會用..若添麻煩真抱歉!!

[chris8888]

假設此鎮有X人,
employed females / employed people = 受雇的人當中有幾%是女生
(0.64-0.48) * X / 0.64 * X, 約掉X, 1/4 => 25%