资源描述：
《2013AMC8-problems》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、2013AMC8Problems1.Danicawantstoarrangehermodelcarsinrowswithexactly6carsineachrow.Shenowhas23modelcars.Whatisthesmallestnumberofadditionalcarsshemustbuyinordertobeabletoarrangeallhercarsthisway?2.Asignatthefishmarketsays,"50%off,todayonly:half-poundpackagesforjust$3perpa
2、ckage."Whatistheregularpriceforafullpoundoffish,indollars?3.Whatisthevalueof?4.Eightfriendsateatarestaurantandagreedtosharethebillequally.BecauseJudiforgothermoney,eachofhersevenfriendspaidanextra$2.50tocoverherportionofthetotalbill.Whatwasthetotalbill?5.Hammieisinthegra
3、deandweighs106pounds.Hisquadrupletsistersaretinybabiesandweigh5,5,6,and8pounds.Whichisgreater,theaverage(mean)weightofthesefivechildrenorthemedianweight,andbyhowmanypounds?6.Thenumberineachboxbelowistheproductofthenumbersinthetwoboxesthattouchitintherowabove.Forexample,.
4、Whatisthemissingnumberinthetoprow?7.Treyandhismomstoppedatarailroadcrossingtoletatrainpass.Asthetrainbegantopass,Treycounted6carsinthefirst10seconds.Ittookthetrain2minutesand45secondstoclearthecrossingataconstantspeed.Whichofthefollowingwasthemostlikelynumberofcarsinthet
5、rain?8.Afaircoinistossed3times.Whatistheprobabilityofatleasttwoconsecutiveheads?9.TheIncredibleHulkcandoublethedistancehejumpswitheachsucceedingjump.Ifhisfirstjumpis1meter,thesecondjumpis2meters,thethirdjumpis4meters,andsoon,thenonwhichjumpwillhefirstbeabletojumpmorethan
6、1kilometer?10.Whatistheratiooftheleastcommonmultipleof180and594tothegreatestcommonfactorof180and594?11.Ted'sgrandfatherusedhistreadmillon3daysthisweek.Hewent2mileseachday.OnMondayhejoggedataspeedof5milesperhour.Hewalkedattherateof3milesperhouronWednesdayandat4milesperhou
7、ronFriday.IfGrandfatherhadalwayswalkedat4milesperhour,hewouldhavespentlesstimeonthetreadmill.Howmanyminutesless?12.Atthe2013WinnebagoCountyFairavendorisofferinga"fairspecial"onsandals.Ifyoubuyonepairofsandalsattheregularpriceof$50,yougetasecondpairata40%discount,andathir
8、dpairathalftheregularprice.Javiertookadvantageofthe"fairspecial"tobuythreepairsofsandals.Whatpercentage
