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1、2013AMC8Problems1.Danicawantstoarrangehermodelcarsinrowswithexactly6carsineachrow.Shenowhas23modelcars.Whatisthesmallestnumberofadditionalcarsshemustbuyinordertobeabletoarrangeallhercarsthisway?2.Asignatthefishmarketsays,"50%off,todayonly:half-poundpackagesforjust$3p
2、erpackage."Whatistheregularpriceforafullpoundoffish,indollars?3.Whatisthevalueof?4.Eightfriendsateatarestaurantandagreedtosharethebillequally.BecauseJudiforgothermoney,eachofhersevenfriendspaidanextra$2.50tocoverherportionofthetotalbill.Whatwasthetotalbill?5.Hammieis
3、inthegradeandweighs106pounds.Hisquadrupletsistersaretinybabiesandweigh5,5,6,and8pounds.Whichisgreater,theaverage(mean)weightofthesefivechildrenorthemedianweight,andbyhowmanypounds?6.Thenumberineachboxbelowistheproductofthenumbersinthetwoboxesthattouchitintherowabove.
4、Forexample,.Whatisthemissingnumberinthetoprow?7.Treyandhismomstoppedatarailroadcrossingtoletatrainpass.Asthetrainbegantopass,Treycounted6carsinthefirst10seconds.Ittookthetrain2minutesand45secondstoclearthecrossingataconstantspeed.Whichofthefollowingwasthemostlikelynu
5、mberofcarsinthetrain?8.Afaircoinistossed3times.Whatistheprobabilityofatleasttwoconsecutiveheads?9.TheIncredibleHulkcandoublethedistancehejumpswitheachsucceedingjump.Ifhisfirstjumpis1meter,thesecondjumpis2meters,thethirdjumpis4meters,andsoon,thenonwhichjumpwillhefirst
6、beabletojumpmorethan1kilometer?10.Whatistheratiooftheleastcommonmultipleof180and594tothegreatestcommonfactorof180and594?11.Ted'sgrandfatherusedhistreadmillon3daysthisweek.Hewent2mileseachday.OnMondayhejoggedataspeedof5milesperhour.Hewalkedattherateof3milesperhouronWe
7、dnesdayandat4milesperhouronFriday.IfGrandfatherhadalwayswalkedat4milesperhour,hewouldhavespentlesstimeonthetreadmill.Howmanyminutesless?12.Atthe2013WinnebagoCountyFairavendorisofferinga"fairspecial"onsandals.Ifyoubuyonepairofsandalsattheregularpriceof$50,yougetasecon
8、dpairata40%discount,andathirdpairathalftheregularprice.Javiertookadvantageofthe"fairspecial"tobuythreepairsofsandals.Whatpercentage
