首页
登录
职称英语
A certain truck traveling at 55 miles per hour gets 4.5 miles per gallon of dies
A certain truck traveling at 55 miles per hour gets 4.5 miles per gallon of dies
游客
2025-02-27
35
管理
问题
A certain truck traveling at 55 miles per hour gets 4.5 miles per gallon of diesel fuel consumed.Traveling at 60 miles per hour,the truck gets only 3.5 miles per gallon.On a 500-mile trip,if the truck used a total of 120 gallons of diesel fuel and traveled part of the trip at 55 miles per hour and the rest at 60 miles per hour,how many miles did it travel at 55 miles per hour?
选项
A、140
B、200
C、250
D、300
E、360
答案
E
解析
Let m be the number of miles the truck traveled at 55 miles per hour. It follows that 500 - m is the number of miles the truck traveled at 60 miles per hour. Then, m/4.5 is the number of gallons the truck used while traveling at 55 miles per hour and
is the number of gallons the truck used while traveling at 60 miles per hour, so
= 120. Solving this equation gives m = 360.
The correct answer is E.
转载请注明原文地址:https://tihaiku.com/zcyy/3974632.html
相关试题推荐
Acertaintrucktravelingat55milesperhourgets4.5milespergallonofdies
Onacertainnumberline,if8isdistanceof18fromn,and17ishedistanceo
Acertainmathematicaloperationmayberepresentedbythesymbol@.Forallnonz
When-ofacertainnumberissubtractedfromthenumberandthenthisdifferenc
Homeostasis,ananimal’smaintenanceofcertaininternalvariableswithinan
Neotropicalcoastalmangroveforestsareusually“zonal,”withcertainmangr
Acarmanufacturerperiodicallydiscountscertaincarmodelstoitsdealerstoc
Certainmessengermoleculesfightdamagetothelungsfromnoxiousairbytellin
Themostwidelyusedtherapyforacertaintypeofulcercompletelyhealssuchu
AuthoritiesinCaliforniarequireddriverstousetheirheadlightsonacertain
随机试题
Whydoestheprofessormention$20bill?[br][originaltext]W:Doyouliketo
Manycountrieswillnotallowcigaretteadvertisingintheirnewspaperoron
Whataniceday!Howaboutthethreeofus______awalkintheparknearby?(20
在散射比浊的设计中,多采用的原理是A.Mancini原理 B.Mile原理
对某在用钢筋混凝土桥梁进行结构材质状况无损检测,请回答以下相关问题。(2)采用超
装配式梁板在安装构件前的描述不正确的是( )。 A、支承结构的强度应符合设计
A.肛瘘 B.坐骨肛管间隙脓肿 C.直肠癌 D.直肠息肉和内痔 E.左半
下列资金中,不属于资本金现金流量表中现金流入的是( )。A.回收固定资产余值
下列各方中,体现“通因通用”治法的方剂有 A.芍药汤 B.大承气汤 C.枳
下列各项中,属于根据法的内容、效力和制定程序所作的分类的是()。A.根本法和普通
最新回复
(
0
)