The scores reported for a certain multiple-choice test were derived by subtracting 1/3 of the number of wrong answers from the n

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问题 The scores reported for a certain multiple-choice test were derived by subtracting 1/3 of the number of wrong answers from the number of right answers. On a 40-question test, if none of the questions was omitted and the score reported was 20, how many wrong answers were there?

选项 A、5
B、10
C、15
D、25
E、30

答案C

解析某一多项选择考试的分数的计算是用答对的题数减去答错题数的1/3。在一个由40道题组成的测验中，若无题遗漏，且考试分数为20，问答错的题数有多少个?
解：本题的正确答案为(C)。设答错题数为x个，则由题意可得：(40-x)-1/3 x =20 → x=15

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本试题收录于： GRE QUANTITATIVE题库GRE分类

GRE QUANTITATIVE

GRE

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The scores reported for a certain multiple-choice test were derived by subtracting 1/3 of the number of wrong answers from the n

GRE QUANTITATIVE

GRE

Icanhardly______thedifferencebetweenthesetwowords.

Thecomputersmadebyourcompanysellbest,butseveralyearsagonoonecouldhaveimaginedtheroleinthemarketsthatthey_

Overtheyears,collegestudentshavestoodtogetherforwhattheybelievein,fromcivilrightstoanti-warpoliciestothemor

Itwassuggestedthat______bigeventliketheYearofRussiainChinashouldcertainlybenefit______relationshipbetweenthe

______fromspace,ourearth,withwatercovering70%ofitssurface,appearsasa"blueplanet".

Expertssuggestusingadifferentpasswordforeverywebsiteyouvisit,andchangingthepasswordeveryfewmonths.Ittakestro

Conversationbeginsalmostthemomentwecomeintocontactwithanotherandcontinuesthroughouttheday【B1】______theaidof

AftersixmonthsoflivinginNewZealand,Irealizedonething.Despitemy【C1】______forgreatercontactwithlocalstudents,un

Visitorscannothelpbut______thebeautifuldesignofthepalace.

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