首页
登录
职称英语
If two trains are 120 miles apart and are traveling toward each other at a const
If two trains are 120 miles apart and are traveling toward each other at a const
游客
2024-01-12
25
管理
问题
If two trains are 120 miles apart and are traveling toward each other at a constant rate of 30 mph and 40 mph, respectively, how far apart will they be exactly 1 hour before they meet?
选项
A、10 miles
B、30 miles
C、40 miles
D、50 miles
E、70 miles
答案
E
解析
若两辆火车相距120英里远,且分别以每小时30英里和每小时40英里的速度对开,问它们相遇前1小时时相距多远?
解:本题的正确答案是(E)。考生略加思考就知,本题根本就不需要计算。相遇前1小时,也就是两辆火车还要开1小时才能相遇,而两辆火车的速度分别是30英里/小时和40英里/小时,在1小时中两辆火车各行驶30英里和40英里,也就是相遇前1小时相距70英里。
转载请注明原文地址:https://tihaiku.com/zcyy/3356806.html
相关试题推荐
Acertaintruckuses18gallonsofdieselfuelintraveling270miles.Inorder
Acertaintrucktravelingat55milesperhourgets4.5milespergallonofdies
Accordingtothepassage,by1935theskepticismofBlackworkerstowardunions
Accordingtothepassage,by1935theskepticismofBlackworkerstowardunions
Thepassageisprimarilyconcernedwith______[br]Theauthor’sattitudetoward
Incontrastwithadarksurfaceanditstendencytowardheatabsorption,alarge
MechanicaltoycarsA,B,andC,eachtravelingatitsownuniformrate,started
Twotrainsrunningonparalleltracksare600milesapart.Onetrainismovinge
A、ImmutablefromthepointofitscreationB、Evolvingfrominheritedtrainstol
A、Theyassistintheorientationprocessbyhelpingthecrabnavigatetowardpos
随机试题
[originaltext]W:DoyouwanttogoonatripwithustoFloridathisspring?It
Whensunlightentersadarkroomthroughtheblinds______.[br]Diffusionofli
Psychologiststakeopposingviewsofhowexternalrewards,fromwarmpraise
StoppingSmoking:ASH’s15Tips—ActiononSmokingandHealth1
Manypeoplethinkofdesertasbarrenregions,but______(许多动植物已经适应那里的生活).manysp
Ifyou’reinchargeofChristmasdinner,withallitsinterconnectedtasksa
著名俄罗斯古典芭蕾舞剧《胡桃夹子》、《天鹅湖》的编导(),因开启了俄罗斯芭蕾本
在区域风险分析时,评价信贷资产质量的指标主要有( )。A.信贷平均损失比率
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
在我国,单位内部会计监督的主体一般是指()。A.财政、税务、审计机关
最新回复
(
0
)