数据填充题(Data Sufficiency)不仅要求考生具备基础的数学知识和熟练的计算技巧,而且更注重检验考生分析定量问题的能力。今天我们就来讲一下GMAT数据充分性试题OG练习题分析第五部分。
26. The profit from the sale of a certain appliance increases, though not proportionally, with the number of units sold. Did the profit exceed $4 million on sales of 380,000 units?
(1) The profit exceeded $2 million on sales of 200,000 units.
(2) The profit exceeded $5 million on sales of 350,000 units.
翻译:某销售利润随着销售量的增加而增加,但不是按照比例增加。那么当销售
380000,销售利润能超过4吗?
(1) 当销售量是200000的时候,利润超过2
(2) 当销售量是.350000的时候,利润超过5
解析:条件一给出销售量是200000,利润是2,由于不是按照比例增加,所以不能充分表明题干。条件二,由于销售了350000利润已经是5了,那么销售了380000,利润肯定大于5,当然也就超过4了,所以条件二符合。答案选择B
27. If n is an integer, is n even?
(1) n2-1 is an odd integer.
(2) 3n+4 is an even integer.
翻译:如果n是整数,那么n是偶数吗?
(1) n2-1是奇数
(2) 3n+4是偶数
解析:条件一表明n2-1是奇数,那么n2是偶数,也就是说n是偶数满足题干,条件二3n+4是偶数,那么3n是偶数,因为3是奇数,所以n一定是偶数。所以条件二满足。所以两个条件都满足。答案是D
28. Carmen currently works 30 hours per week at her part-time job. If her gross hourly wage were to increase by
$1.50, how many fewer hours could she work per week and still ear n the same gross weekly pay as before the
increase?
(1) Her gross weekly pay is currently $225.00.
(2) An increase of $1.50 would represent an increase of 20 percent of her current gross hourly wage.
翻译:C业余时间打工,打工30个小时,每小时比以前多赚1.5,那么以前他至少工作多少时间,才能赚得跟现在一样多?
(1) 目前它的工资是一周225,
(2) 长了1.5等于她目前一小时工资的20%
解析:条件一已知目前一周赚得总数,一周30小时,所以一小时赚的就知道了,那么以前一小时赚得也就是到了,这样就能算出以前需要干多少时间。条件以满足。条件二只能算出目前一小时工资是多少,可以算出之前一小时工资是多少,那么也就能算出之前需要工作时长。所以连个条件都单独满足。答案选择D
29. If 90 students auditioned for the school musical, how many were accepted?
(1) 2/3of the boys and 1/3of the girls who auditioned were accepted.
(2) 26 of the boys who auditioned were accepted.
翻译:某校有90个学生参加学校试镜,有多少学生能被选上?
(1)2/3的男生和1/3.的女生被选上
(2)26个男生被选上
解析:不知道男生女生数量,所以条件一算不出有多少学生被选上,条件二给出男生被选上的数量,那么就可以知道26占据男生的2/3,所以男生人数就知道了,这样女生人数就知道了,然后女生1/3的人数选上,这样就知道了男女被选上的总人数了所以两个条件和在一起才能得出答案。选择C

30. A circular tub has a band painted around its circumference, as shown above. What is the surface area of this
painted band?
(1)x=0.5
(2) The height of the tub is 1 meter.
翻译:一个圆形浴缸,沿着周长涂一圈带状面积,求这个带状面积是多少?
(1) x=.05
(2) 浴缸高度是1米
解析:带状面积其实就是一个长方形的面积,只不过长方形高是x,长是圆的周长,条件一给出高度 ,但是不知道圆的周长,条件二的条件也咩有用,所以答案选择E
以上就是关于GMAT数据充分性试题OG练习题分析的内容介绍,希望考生通过以上内容,不断夯实自己的知识点,熟练做题技巧,提升解题能力以及分析能力,争取都能取得理想成绩。
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