作者skiptomylou3 (一条寂寞又无助的道路)
看板GMAT
标题[计量] 两题有关GMAT problem solving的问题
时间Tue Feb 17 18:02:41 2009
因为这两题是从对岸的一本书叫做"GMAT 汇编"上面看到的，
所以不知道标题要写什麽，所以如果有需要更改标题的再麻烦告知!
1.Month Average price per Dozen
April $1.26
May $1.20
June $1.08
The table above shows the average (arithmetic mean) price per dozen
of the large grade A eggs sold in a certain store during three
secessive months.If 2/3 as many dozen were sold in April as in May,
and twice as many were sold in June as in April . What was the average
price per dozen of the eggs sold over the three-month period?
(1) $1.08
(2) $1.10
(3) $1.14
(4) $1.16
(5) $1.18 Ans:D
第一题感觉应该要设x和y，但完全没有头绪要把x,y设在哪?
2. If y =/= 3 and 3x/y is a prime integer greater than 2, which of the
following must be true?
I. x=y
II. y=1
III. x and y are prime integers.
(A) None
(B) I only
(C) II only
(D) III only
(E) I and III Ans:A
第二题我的答案是(E)，但让我很模糊的是甚麽叫做prime integer?
用google查prime integer得到"素数"，然後用wiki查感觉更不清楚
麻烦大家了~谢谢!
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◆ From: 118.167.184.214
1F：推 hitachil:prime integer是质数吧? 02/17 19:05
2F：→ Bballer:楼上正姐 02/17 19:16
3F：→ jamlco:原Po OG做完了吗 做完应该知道是质数>< 02/17 19:54
修个文，我补来欣，然後来欣要这里拜或下礼拜才发，但我想早点开始动作
所以就先开始算! 抱歉!问这麽白痴的问题
※ 编辑: skiptomylou3 来自: 118.167.184.214 (02/17 20:04)
※ 编辑: skiptomylou3 来自: 118.167.184.214 (02/17 20:05)