首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
If the average (arithmetic mean) of x and y is 40, and z-x=60, what is the average of y and z?
If the average (arithmetic mean) of x and y is 40, and z-x=60, what is the average of y and z?
admin
2011-02-20
64
问题
If the average (arithmetic mean) of x and y is 40, and z-x=60, what is the average of y and z?
选项
A、20
B、50
C、65
D、70
E、140
答案
D
解析
To get the average of y and z, you need to find half of the sum of y+ z. To obtain that number, first restate the first statement as an equation: x+y=80. Add that equation to z-x=60, so that x+y+z-x=80+60=y+z=140. The average of y and z is 140/2=70.
转载请注明原文地址:https://kaotiyun.com/show/LDtO777K
本试题收录于:
GMAT QUANTITATIVE题库GMAT分类
0
GMAT QUANTITATIVE
GMAT
相关试题推荐
Mybosslikedmyidea______abranchofficeinLosAngelesandgavemethegreenlighttogoahead.
Thatstudent______hishandeverytimeIaskedaquestion.
Theinterviewershouldtakedownnotesatthemomenttheperson______answersthequestions.
Normallyastudentmustattendanumberofcoursesinordertograduate,andeachcoursewhichheattendsgiveshimagradewhic
Therearemanyolderpeopleintheworldandtherewillbemanymore.Alittle-knownfactisthatover60percentoftheolderp
Afterbeingtestedinmanyways,thisnewly-designedmachinewill______inthenearfuture.
ItusedtodistresslargenumbersofEasternpeopleswholivedmainlyonrice.
Afterthenewsystemhassettleddown,peopleinnon-computerjobsarenotalwaysreplacedwhentheyleave,resultinginadecre
Believeornot,opticalillusion(错觉)cancuthighwaycrashes.Japanisacaseinpoint.Ithasreducedautomobilecrashestosome
Governmentderegulationofthelong-distancetelephonebusinesshasresultedinincreasedcompetitionamongtelephonecarriers,
随机试题
在社会主义社会里,处于执政党地位的是
简述艺术活动中的共鸣现象。
长期卧床可诱发的并发症是()。
若口腔黏膜无缺损,而皮肤缺损较多,不宜采取的措施是()。
制定监理工作程序应体现()和()的要求。
在用成本法评估新建房地产时,属于基础设施建设费的项目有()。
个人经营贷款的借款人是指()。
国家建立统一的义务教育教师职务制度。中小学教师职务包括()
LessthanadecadeagoJapanesebankswerethesickmenofglobalfinance.Todaytheyarebouncingback.Havingrebuilttheirba
Forthispart,youareallowed30minutestowriteanessaycommentingonthestatement"Wecanlearnmorefrompeopleatahigh
最新回复
(
0
)