[計量] BB Test7, Section4 No.28

看板GRE (GRE入學考試)作者時間17年前 (2008/09/27 16:35), 編輯推噓0(002)
留言2則, 1人參與, 最新討論串1/1
在此請教大家,題目語意不大了解,謝謝大家! 28. By weight, liquid A makes up 7.0 percent of solution 1 and 14.5 percent of solution 2. If 3 grams of solution 1 is mixed 2 grams of solution 2, then liquid A accounts for what percent of the weight of the resulting solution? (A) 6.09% (B) 10% (C) 10.75% (D) 21.5% (E) 50% 答案為 (B) 10% 再次謝謝大家! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 125.224.181.130

09/27 16:52, , 1F
謝謝版友熱心回應,算式如下:
09/27 16:52, 1F

09/27 16:52, , 2F
[3*(7/100) + 2*(14.5/100)]/5 = 10 %
09/27 16:52, 2F
文章代碼(AID): #18tV0wyx (GRE)
文章代碼(AID): #18tV0wyx (GRE)