首页
登录
职称英语
VALUE OF IMPORTS TO AND EXPORTS FROM COUNTRY T, 2000-2009[img]2014m9x/ct_egreqj
VALUE OF IMPORTS TO AND EXPORTS FROM COUNTRY T, 2000-2009[img]2014m9x/ct_egreqj
游客
2025-02-24
8
管理
问题
VALUE OF IMPORTS TO AND EXPORTS FROM COUNTRY T, 2000-2009
[br] Hard Question
If it were discovered that the value of imports shown for 2007 was incorrect and should have been $5 billion instead, then the average(arithmetic mean)value of imports per year for the 10 years shown would have been approximately how much less?
选项
A、$200 million
B、$50 million
C、$20 million
D、$7 million
E、$5 million
答案
A
解析
To answer this question, you do not need to compute either of the two 10-year averages referred to in the question; you just need to calculate the difference between the two averages.
The average value of imports for the 10 years shown in the graph is found by adding the 10 values and then dividing the sum by 10. The value of imports in 2007 is $7 billion. If that amount were $5 billion instead, then the sum of the values would be $2 billion less. If the sum were $2 billion less than what it was, then the average would decrease by 2 billion divided by 10, or
= 200,000,000. The average would therefore be $200 million less, and the correct answer is Choice A.
A more algebraic approach to the problem is to let S represent the sum, in billions, of the 10 values of imports in the graph. The average of the 10 values is S/10. Note that S - 2 represents the sum, in billions, of the 10 values adjusted for the $2 billion correction for 2007. The average of the adjusted sum is
. The difference between the two averages is
The difference is 0.2 billion dollars, or $200 million. The correct answer is Choice A.
转载请注明原文地址:https://tihaiku.com/zcyy/3970476.html
相关试题推荐
Evaluatethefollowing.[img]2014m9x/ct_egreqj_egreqjs_0065_20148[/img][br]9/1
Evaluatethefollowing.[img]2014m9x/ct_egreqj_egreqjs_0065_20148[/img][br][*]
Evaluatethefollowing.[img]2014m9x/ct_egreqj_egreqjs_0065_20148[/img][br]1/4
VALUEOFIMPORTSTOANDEXPORTSFROMCOUNTRYT,2000-2009[img]2014m9x/ct_egreqj
VALUEOFIMPORTSTOANDEXPORTSFROMCOUNTRYT,2000-2009[img]2014m9x/ct_egreqj
[img]2014m9x/ct_egreqj_egreqtbz1_0015_20148[/img]Thecirclegraphaboveshowst
[img]2014m9x/ct_egreqj_egreqjs_0013_20148[/img]Intherectangularsolidabove,
[img]2014m9x/ct_egreqj_egreqbj_0001_20148[/img][br]BYouaregiventhatthreen
[img]2014m9x/ct_egreqj_egreqtbz1_0030_20148[/img]Onthenumberlineshownabove
[img]2014m9x/ct_egreqj_egreqjs_0027_20148[/img]Thefigureaboverepresentsare
随机试题
[originaltext]M:Oh,hello,LiLi.Comeonin,andhow’veyoubeenkeepingrece
[originaltext]Todaywhenamanstepsontothemoon,orsomethingnewandi
It’shardlynewsthattheimmigrationsystemismess.Foreignnationalshave
根据《建筑节能工程施工质量验收规范》GB50411-2007,传热系数是指稳态条
A.心室前负荷加重 B.心室后负荷加重 C.心室前、后负荷均加重 D.心肌
共用题干 TheInterpersonalSkillsofChildr
共用题干 InterviewTheimportanceandfocus
Thechangeinthatvillagewasmiraculou
《晋书-刑法志》:“峻礼教之防,准五服以治罪。”“服制若近,以尊犯卑,处刑则轻,
(2018年真题)《水利水电规程施工安全防护设施技术规范》(SL714-2015
最新回复
(
0
)