首页
登录
职称英语
The scores reported for a certain multiple-choice test were derived by subtracti
The scores reported for a certain multiple-choice test were derived by subtracti
游客
2025-02-24
10
管理
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
转载请注明原文地址:https://tihaiku.com/zcyy/3971301.html
相关试题推荐
Afterweeksofuncertaintyaboutthecoursethecountrywouldpursuetostabiliz
Inacertainruralarea,peoplenormallydisposeofhouseholdgarbagebyburning
Acertainjarcontains100jellybeans:50white,30green,10yellow,5red,4
The10householdsonacertainstreethavehouseholdincomesthatrangefrom$34
Alinenshophasacertaintablecloththatisavailablein8sizesand10colors
Thealtitudeofacertaintriangularsailis2metersgreaterinlengththanits
Acertainmoneymarketaccountthathadabalanceof$48,000duringalloflast
Acertainrectanglehasperimeter54.Iftheratioofthelengthoftherectangl
Whenacertainnumberisdividedby7,theremainderis0.Iftheremainderisn
When2/5ofacertainnumberisaddedtothenumberandthissumissubtractedf
随机试题
Itishightimethatyou______abath;whyareyoustillwatchingTV?A、willtak
[originaltext]M:Whethertheyareattendingcollegeorworkingtheirfirstjobs
Presentlyhemadethesuggestionthatthey(carryon)______theirconversation
案例: 郝老师在上高中美术鉴赏课《中国民间美术》时,要求学生以小组形式收集、欣
已知数列{an)与数列{bn),n=1,2,3…,则下列结论不正确的是()。
下列关于我国证券公司风险管理基本情况的说法正确的有()。 ①风险限额方面,
企业清算按不同性质,分为()。A.自愿清算 B.行政清算 C.破产清算
根据《政府投资条例》,政府投资范围以非经营性项目为主,对确需支持的经营性项目,主
根据《建设工程施工专业分包合同(示范文本)》(GF—2003—0213)不属于承
施工单位与建设单位签订施工合同后,将其中的部分工程分包给分包单位,则施工现场的安
最新回复
(
0
)