[計量] 請問一題計量

看板GRE (GRE入學考試)作者 (花花兒)時間17年前 (2008/08/08 23:08), 編輯推噓2(205)
留言7則, 2人參與, 最新討論串2/6 (看更多)
If 2/3 of the number of women attending a certain dance is equal to 1/2 the number of men attending, what fraction of those attending are women? A: 3/7 請教各位了= =" -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 59.125.105.84

08/08 23:20, , 1F
令 x= # of women, y = # of men
08/08 23:20, 1F

08/08 23:21, , 2F
(2/3)*x = (1/2)*y => x/y = 3/4
08/08 23:21, 2F

08/08 23:21, , 3F
x/(x+y) = 3/7
08/08 23:21, 3F

08/08 23:39, , 4F
請問 2/3 of the number of women
08/08 23:39, 4F

08/08 23:42, , 5F
跟 1/2 the number of men 難道沒有
08/08 23:42, 5F

08/08 23:42, , 6F
差嗎? 因為women那邊有多了一個of
08/08 23:42, 6F

08/08 23:47, , 7F
我覺得是沒差耶~~
08/08 23:47, 7F
文章代碼(AID): #18d65nu4 (GRE)
文章代碼(AID): #18d65nu4 (GRE)