首页
登录
职称英语
Of the people in a certain survey, 58 percent were at most 40 years old and 70 p
Of the people in a certain survey, 58 percent were at most 40 years old and 70 p
游客
2024-01-12
50
管理
问题
Of the people in a certain survey, 58 percent were at most 40 years old and 70 percent were at most 60 years old. If 252 of the people in the survey were more than 40 years old and at most 60 years old, what was the total number of people in the survey?
选项
A、1900
B、2100
C、2400
D、2700
E、3000
答案
B
解析
In this question, it is given that of the people surveyed, 58% were at most 40 years old and 70% were at most 60 years old. Therefore, 70% — 58%, or 12%, of the people surveyed were more than 40 years old and at most 60 years old, and you are given that 252 people are in this group. Let x be the total number of people in the survey. Then 12% of x is 252, that is, 0.12x = 252, and so x =
= 2,100. Therefore, the total number of people in the survey was 2,100, and the correct answer is Choice B.
转载请注明原文地址:https://tihaiku.com/zcyy/3355750.html
相关试题推荐
Itisanunfortunatefactoftoday’slifethatmostpeoplearegrowingupun
Itisanunfortunatefactoftoday’slifethatmostpeoplearegrowingupun
Itisanunfortunatefactoftoday’slifethatmostpeoplearegrowingupun
Itisanunfortunatefactoftoday’slifethatmostpeoplearegrowingupun
Itisanunfortunatefactoftoday’slifethatmostpeoplearegrowingupun
Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeand
Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeand
Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeand
Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeand
Somepeoplethinkoflifeasagame.Therearesimilaritiesbetweenlifeand
随机试题
Outof______revenge,hedidhisworsttoblackenhercharacterandrainherre
Shetoldusbrieflyabouthowtheysucceededin______thenewproductA、develop
[originaltext]W:I’msorry,[8]butyouareonthelibrarychecklistM:Whatdoe
ComputerLiteracyTodaywe’lldiscusscomputerliteracy.I.
WhatdoesthespeakerthinkofJohn?[br][originaltext]Somepeopleregretdoin
赛前状态属于( )A.条件反射 B.非条件反射 C.正常反应 D.正常适
A.病原体被清除 B.隐性感染 C.潜伏性感染 D.病原体携带状态 E.
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
应收账款保理的主要意图在于将逾期未能收回的应收账款转让给保理商,从而获取相应的资
在某双代号网络计划中,工作A的最早开始时间为第10天,其持续时间为6天,该工作有
最新回复
(
0
)