首页
登录
职称英语
Excluding purchases by businesses, the average amount spent on a factory-new car
Excluding purchases by businesses, the average amount spent on a factory-new car
游客
2024-01-13
58
管理
问题
Excluding purchases by businesses, the average amount spent on a factory-new car has risen 30 percent in the last five years. In the average household budget, the proportion spent on car purchases has remained unchanged in that period. Therefore the average household budget must have increased by 30 percent over the last five years. Which of the following is an assumption on which the argument relies?
选项
A、The average number of factory-new cars purchased per household has remained unchanged over the last five years.
B、The average amount spent per car by businesses buying factory-new cars has risen 30 percent in the last five years.
C、The proportion of the average household budget spent on all car-related expenses has remained unchanged over the last five years.
D、The proportion of the average household budget spent on food and housing has remained unchanged over the last five years.
E、The total amount spent nationwide on factory-new cars has increased by 30 percent over the last five years.
答案
A
解析
在解答本题时一定要注意数量关系的变化,我们可以借助简单的数学公式加以推导,设一个家庭开始时在每辆汽车上的花费为x,平均购买汽车数为n,家庭预算为y;在变化后这三项数值分别为x’,n’,y’。则根据本题中的描述,我们很容易得出三个等式,即①:x’=1.3x,②:y’=1.3y,③:nx/y=n’x’/y’。把①、②式同时代入③式,得出n=n’,即每个家庭在这5年当中,平均购买汽车的数量不变。由此分析可知,要使本题的结论成立,那它一定是以(A)选项所描述的内容为assumption。
转载请注明原文地址:https://tihaiku.com/zcyy/3358741.html
相关试题推荐
ThreedifferentlumberjackscanchopWamountofwoodin30minutes,45minutes,
Acaraverages40milesperhourforthefirst6hoursofatripandaverages60
Ofthenumbersq,r,s,andt,whichisgreatest?(1)Theaverage(arithmeticme
StateXhasasalestaxrateofkpercentonallpurchasesandStateYhasasal
Khalildrove120kilometersinacertainamountoftime.Whatwashisaveragesp
Federaleffortstoaidminoritybusinessesbeganinthe1960’swhentheSmallBu
Whenairlineswerederegulatedinthe1970s,theaveragepriceofaticketwas$
Federaleffortstoaidminoritybusinessesbeganinthe1960swhentheSmal
Federaleffortstoaidminoritybusinessesbeganinthe1960swhentheSmal
Federaleffortstoaidminoritybusinessesbeganinthe1960swhentheSmal
随机试题
Whatdodietingandenergypolicyhaveincommon?TheSnackWelleffect.The
AnimalsontheMoveA)Itlookedlikeascenefrom"Jaws"
Learningforeignlanguages,bothatschooloraftergraduation,canberewar
HowtoFindTimeforYourselfI.Introduction:waystocarv
TheVikings’VoyagetoEternitySincetheMerovingianAge
建设项目设计概算是()阶段,由设计单位按设计内容概略算出该工程立项开始到交
土的强度实质上是由下列哪一种力学特征决定的?()A.土的抗压强度 B.土的
证券产品选择的基本原则包括()。 Ⅰ.收益性原则Ⅱ.安全性原则Ⅲ.适用性原则Ⅳ
下列关于远期和期货合约的论述,错误的是()。A.两者都是双方约定在未来的某一确
患者,男,35岁。症见筋骨疼痛,两足痿软,伴有阴部湿疹,小便短赤,舌苔黄。医生建
最新回复
(
0
)