首页
登录
职称英语
The following data sufficiency problems consist of a question and two statements
The following data sufficiency problems consist of a question and two statements
游客
2024-01-14
33
管理
问题
The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient. [br] If 5a=9b=15c, what is the value of a+b+c?
(1) 3c-a=5c-3b
(2) 6cb=10a
选项
答案
B
解析
Statement (1) alone is insufficient; you can restate the equation as 3b=2c+a; if you multiply both sides of the equation by 3, you get 9b=6c+3a; you can determine from the equation 5a=15c that a=3c, so all this restated equation tells you is that 9b=15c=5a, which tells you nothing about the actual value of a or b. Statement (2) is sufficient. If you divide both sides of the equation by 2, you get 3cb=5a; you know that 5a=9b, so you can form the equation 3cb=9b, which you can reduce to c=3. With this value you can determine that a=9 and b=5, and you can thereby find a definitive answer to the question posed.
转载请注明原文地址:https://tihaiku.com/zcyy/3360375.html
相关试题推荐
Everydirectorneedsanassistantthathecan______totakecareofproblemsthat
Student:ImeanIwanttodosomeoftheseproblems.Teacher:Yeah.Student:Buti
Student:ImeanIwanttodosomeoftheseproblems.Teacher:Yeah.Student:Buti
Everyfieldofchemistry()differentchemicalreactions.A、holdsB、consistsC、com
Thatstudent______hishandeverytimeIaskedaquestion.A、madeupB、putupC、r
LivinginthecentralAmericandeserthasitsproblems,______obtainingwateris
Thechemistryteacheraskedthepupilswhatwaterwas______of.A、consistedB、comp
Tomakeupanobjectivetest,theteacherwritesaseriesofquestions,______ha
Rosemaryis______fatterthanshewaswhenIfirstmether.A、consistentlyB、const
Tomakeupanobjectivetest,theteacherwritesaseriesofquestions,______ha
随机试题
Manywomenfeeladditionalstresswhentheymustdecidewhattheyfeelisbe
Althoughthewindhas______,therainremainssteady,soyoustillneedarain
Optimismcanhelpyoutobehappier,healthierandmoresuccessful.Pessimis
Knowledgeacquisitionresearchsupportsthegenerationofknowledge-basedsy
EitheryouorLinMing______supposedtodothejob.A、areB、beC、beingD、isD
TheFrenchdivisionofMcDonald’shasrunadvertisementsthatincludedasur
类实验性研究中必须具备的设计要素是()A.干预 B.盲法 C.随
下列有关门的设计规定中,哪条不确切?()A.体育馆内运动员出入的门窗净高不得
补体经典激活途径起始成分中具有识别作用的亚单位是A.C1qB.C1rC.C1sD
关于插座接线下列说法正确的是()。A.同一场所的三相插座,其接线的相序应一
最新回复
(
0
)