[計量] 問一題數學

看板GRE作者 (瑋仔)時間16年前 (2008/05/30 22:28), 編輯推噓1(100)
留言1則, 1人參與, 最新討論串4/17 (看更多)
取自BB TEST7 section4 第28題 By weight, liquid A makes up 7.0 percent of solution I and 14.5 percent of solution II. If 3 grams of solution I is mixed with 2 grams of solution II, then liquid A accounts for what percent of the weight of the resulting solution ? ANS: 10% 我不管怎麼湊都算不出這個答案 囧 感謝呀~~ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 163.25.118.160

05/30 22:33, , 1F
(3*7+2*14.5)/(3+2) = 10 (%)
05/30 22:33, 1F
文章代碼(AID): #18G0xuxN (GRE)
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文章代碼(AID): #18G0xuxN (GRE)