A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order

游客2025-02-27 43

问题 A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order for the truck to travel the same distance using 10 gallons of diesel fuel, by how many miles per gallon must the truck’s fuel mileage be increased?

选项 A、8
B、9
C、12
D、15
E、27

答案 C

解析 If the truck travels 270 miles on 18 gallons, it is getting 270/18=15 miles per gallon. To travel 270 miles on 10 gallons, it would need to get 27 miles per gallon. 27-15=12.

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A certain truck uses 18 gallons of diesel fuel in traveling 270 miles. In order

Thetablebelowshowstheenrollmentinvariousclassesatacertaincollege.[im

Inacertainflowershop,whichstocksfourtypesofflowers,thereare-asman

Acertainjarcontains100jellybeans:50white,30green,10yellow,5red,4

Inacertaintwo-digitnumber,thetens’digitistripletheunits’digit,this

Alltraineesinacertainaviatortrainingprogrammusttakebothawrittentest

Therewere36，000hardbackcopiesofacertainnovelsoldbeforethepaperbackv

Onthedayoftheperformanceofacertainplay,eachticketthatregularlysell

[img]2022m10x/ct_ve01204002j_0009_221018[/img]Acertainmanufacturerusesthef

GivenapositivenumberN,whenNisroundedbyacertainmethod(forconvenienc

Whenacertainstretchofhighwaywasrebuiltandstraightened，thedistancealon

Whydoeshefeelproud?Becausehehashelpedtomakethepark______.[origin

Mostrunners,whetherthey’retrainingforamarathonorsimplyouttogets

[originaltext]W:There’sbeenalotoffocusonthefundingincreasethatwasr

AstheEnglishlanguagehaschangedatafastspeedinthiscentury,sohas

设n是描述问题规模的非负整数，下面程序片段的时间复杂度是（）。x=2；while

儿科用药中，最方便、最安全、最经济的给药途径是A.静脉注射 B.口服给药 C

在全球娱乐产业爆发增长的背景下，国产网剧想要得以进益，其工业制作水平还必须在“一

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