[計量] 請教 BB p.161 No.30

看板GRE (GRE入學考試)作者 (他哭桑)時間16年前 (2010/05/28 18:26), 編輯推噓1(101)
留言2則, 2人參與, 最新討論串1/1
Two tanks, X and Y, are filled to capacity with jet fuel. Tank X holds 600 gallons more than tank Y. If 100 gallons of fuel were to be pumped from each tank, tank X would then contain 3 times as much fuel as tank Y. What is the total number of gallons of fuel in the two full tanks? (A)1400 (B)1200 (C)1000 (D)900 (E)800 -------- 答案是給(A) 可是我對題目的了解怎麼算都是(B) 我猜可能是我對題目有誤解了 可否請各位大大幫我解惑一下?? 感恩XD -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.129.38.118

05/28 18:31, , 1F
X=Y+600 ; (Y+600)-100=(Y-100)3 ; Y=400,X=1000
05/28 18:31, 1F

05/29 00:17, , 2F
喔喔 看了你的式子才完全明白題意 感恩^^
05/29 00:17, 2F
文章代碼(AID): #1B_vf4FP (GRE)
文章代碼(AID): #1B_vf4FP (GRE)