[計量] 請問兩題PP的問題

看板GMAT (GMAT入學考試)作者時間17年前 (2007/11/04 12:13), 編輯推噓0(000)
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On a certain sight-seeing tour, the ratio of the number of women to the number of children was 5 to 2. What was the number of men on the sight-seeing tour? (1) On the sight-seeing tour, the ration of the number of children to the number of men was 5 to 11. (2) The number of women on the sight-seeing tour was less than 30 Ans:C Machines X and Y work a their respective constant rates. How many hours does it take machine Y, working alone, to fill a production order of a certain size than machine X, working alone? (1) Machines X and Y, working together, fill a production order of this size in two-thirds the time that machine X, working alone, does (2) Machine Y, working alone, fills a production order of this size in twice the time that machine X, working alone, does. Ans:E -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 122.126.37.81 ※ 編輯: dedust 來自: 122.126.37.81 (11/04 12:14)
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文章代碼(AID): #17BKRrFt (GMAT)