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
42
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
[originaltext]Goodmorning.Haveyoueverboughtashirtordressonlineon
AcademyAwardnomineeswhogohomeempty-handedmaynothaveashinyOscart
与人结肠黏膜具有共同抗原()A.大肠杆菌O14 B.溶血性链球菌 C.变
梅花管的内孔尺寸允许偏差均为()。A.±0.1mm B.±0.2mm C.
婴儿腹泻的中医分型,下列错误的是A.肝肾阴虚泻 B.湿热泻 C.伤食泻 D
1.公司品牌发展战略是什么?
(2018年真题)用于油溶性液体制剂的常用抗氧化剂是( )A.酒石酸 B.硫
下列不属于社会主义企业按照组织形式划分的是()。A.公司制企业 B.私营
我国预算法规定,中央预算调整方案必须提请()审查和批准。A.财政部 B.国务院
X线片上成人的椎体结核和椎体肿瘤的主要鉴别点是A、是否有死骨形成 B、椎旁软组
最新回复
(
0
)