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
41
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
•Readthearticlebelowaboutacriticalconcerninmergerandacquisitionstra
HealthclubcustomerresearchExampleName:DanielTaylorOccupation:
HowoldwasLeonardodaVinciwhenhemovedtoMilan?[br][originaltext]Le
Hetriedto______hisinvolvementinthisscheme,buthefinallygaveinandco
ThemysteryoftheexpansionofseaicearoundAntarctica,atthesametime
关于影响期货价格因素的说法,正确的有()。A、经济周期因素是影响期货市场价格走势的重要因素B、主要国际流通货币的汇率波动会影响期货市场价格走势C、股
GallaudetUniversitycurrentlydoesnotallowstudentstokeeppetsinthei
在电力系统中发生铁磁谐振时,谐振回路中电感参数是受控的。
刘司昌主要的山东快书表演有()。A.《红大院》 B.《捞铜牛》 C.《独龙冈
(2018年真题)在三大货币政策工具中,既可以调节利率水平,又可以调节利率结构的
最新回复
(
0
)