gmat2最新(problem2)(2)

Ifxandyareprimenumbers,whichofthefollowingCANNOTbethesumofxandy?(A)5(B)9(C)13(D)16(E)2315。Ofthe3,600employeesofCompanyX,31areclerical。Iftheclericalstaffweretobereducedby31,whatpercentofthetotalnumberoftheremainingemployeeswouldthenbeclerical?(A)25%(B)22。2%(C)20%(D)12。5%(E)11。1。Inwhichofthefollowingpairsarethetwonumbersreciprocalsofeachother?Ⅰ。3and31Ⅱ。171and171−Ⅲ。33and3(A)Ⅰonly(B)Ⅱonly(C)ⅠandⅡ(D)ⅠandⅢ(E)ⅡandⅢ17。

Foracertainperformance,xticketsforlower-levelseatsweresoldat$10eachandyticketsforbalconyseatsweresoldat$6each。Iftherewerenootherticketssoldandthenumberofticketssoldforlower-levelseatswas3timesthenumberofticketssoldforbalconyseats,whichofthefollowingexpressesthetotalnumberofdollarsfromticketsalesintermsofx?(A)12x(B)16x(C)28x(D)32x(E)36x18。Ifthecircumferenceofacircularregionisc,whichofthefollowingrepresentstheareaofthatcircularregion?(A)22c(B)42c(C)π22c(D)π42c(E)224πc19。

Eachoftheintegersfrom0to9,inclusive,iswrittenonaseparateslipofblankpaperandthetenslipsaredroppedintoahat。Iftheslipsarethendrawnoneatatimewithoutreplacement,howmanymustbedrawntoensurethatthenumbersontwooftheslipsdrawnwillhaveasumof10?(A)Three(B)Four(C)Five(D)Six(E)Seven20。Inacertainformula,pisdirectlyproportionaltosandinverselyproportionaltor。Ifp=1whenr=0。5ands=2,whatisthevalueofpintermsofr,ands?(A)rs(B)sr4(C)rs4(D)sr(E)sr4SECTION1130Minutes25Questions1。

Whatis45percentof127of240?(A)63(B)90(C)108(D)140(E)3113。Ifxbookscost$5eachandybookscost$8each,thentheaverage(arithmeticmean)cost,indollarsperbook,isequalto(A)yxyx++85(B)xyyx85+(C)1385yx+(D)yxxy+40(E)1340xy4。If21ofthemoneyinacertaintrustfundwasinvestedinstocks,41inbonds,51inamutualfund,andtheremaining$10,000inagovernmentcertificate,whatwasthetotalamountofthetrustfund?(A)$100,000(B)$150,000(C)$200,000(D)$500,000(E)$2,000,0005。

Marionrentedacarfor$18。00plus$0。10permiledriven。Craigrentedacarfor$25。00plus$0。05permiledriven。Ifeachdrovedmilesandeachwaschargedexactlythesameamountfortherental,thendequals(A)100(B)120(C)135(D)140(E)1506。MachineAproducesboltsatauniformrateof120every40seconds,andmachineBproducesboltsatauniformrateof100every20seconds。Ifthetwomachinesrunsimultaneously,howmanysecondswillittakeforthemtoproduceatotalof200bolts?(A)22(B)25(C)28(D)32(E)567。

=002。2003。3(A)1。05(B)1。50015(C)1。501(D)1。5015(E)1。58。In1982theapproximateaveragecostofoperatingasubcompactcarfor10,000mileswas(A)$360(B)$3,400(C)$4,100(D)$4,500(E)$4,9009。In1984theaveragecostofoperatingasubcompactcarwasapproximatelywhatpercentlessthantheaveragecostofoperatingamidsizedcar?(A)12%(B)20%(C)25%(D)33%(E)48。Foreachoftheyearsshown,theaveragecostpermileofoperatingacompactcarminustheaveragecostpermileofoperatingasubcompactcarwasbetween(A)$0。

12and$0。18(B)$0。10and$0。15(C)$0。09and$0。13(D)$0。06and$0。12(E)$0。05and$0。0811。Whatisthedecimalequivalentof5)51(?(A)0。00032(B)0。0016(C)0。00625(D)0。008(E)0。03125CompactMidsizeSubcompaCostpermileforcarsboughtnewintheindicatedyearanddriven10000milesAVERAGECOSTSOFOPERATINGSUBCOMPACT,COMPACT,ANDMIDSIZECARSINTHEUNITEDSTATES,1982-1986Questions8-10refertothefollowinggraph。19821983198419850。600。500。400。300。200。10000GMAT数学PROBLEMSOLVING3112。

Twohundredgallonsoffueloilarepurchasedat$0。91pergallonandareconsumedatarateof$0。70worthoffuelperhour。Atthisrate,howmanyhoursarerequiredtoconsumethe200gallonsoffueloil?(A)140(B)220(C)260(D)322(E)33013。If,24xxx=+−whatisthevalueofx2+3x–4?(A)–4(B)–1(C)0(D)1(E)214。Ifb<2and2x-3b=0,whichofthefollowingmustbetrue?(A)x>-3(B)x<2(C)x=3(D)x<3(E)x>315。Thetrapezoidshowninthefigureaboverepresentsacrosssectionoftherudderofaship。

IfthedistancefromAtoBis13feet,whatistheareaofthecrosssectionoftherudderinsquarefeet?(A)39(B)40(C)42(D)45(E)46。516。=−−30)4。0)(5。4()2。1)(5。1((A)–1。2(B)–0。12(C)0(D)0。12(E)1。217。Ifnisapositiveinteger,thenn(n+1)(n+2)is(A)evenonlywhenniseven(B)evenonlywhennisodd(C)oddwhenevernisodd(D)divisibleby3onlywhennisodd(E)divisibleby4wheneverniseven18。Thefigureaboveiscomposedof6squares,eachwithsidescentimeters。

Ifthenumberofcentimetersintheperimeterofthefigureisequaltothenumberofsquarecentimetersinitsarea,whatisthevalueofs?(A)1(B)35(C)2(D)25(E)3719。If2=ts,thenthevalueofwhichofthefollowingcanbedetermined?Ⅰ。st2Ⅱ。tts−Ⅲ。11−−st(A)Ⅰonly(B)Ⅲonly(C)ⅠandⅡonly(D)ⅡandⅢonly(E)Ⅰ,Ⅱ,andⅢNETINCOMEFORCORPORATIONSAandBGMAT数学PROBLEMSOLVING32CorporationACorporationBNetIncomein1987$2。9million$0。87millionPercentDecreaseinNetIncomefrom1986to19878。

8。3%20。ThenetincomeofCorporationBin1986wasapproximatelywhatpercentofthenetincomeofCorporationAin1987?(A)35%(B)30%(C)25%(D)20%(E)15%SECTION1230Minutes20Questions1。IfJackhadtwicetheamountofmoneythathehas,hewouldhaveexactlytheamountnecessarytobuy3hamburgersat$0。96apieceand2milkshakesat$1。28apiece。HowmuchmoneydoesJackhave?(A)$1。60(B)$2。24(C)$2。72(D)$3。36(E)$5。442。Ifaphotocopiermakes2copiesin31second。

then,atthesamerate,howmanycopiesdoesitmakein4minutes?(A)360(B)480(C)576(D)720(E)1,4403。Thepriceofacertaintelevisionsetisdiscountedby10percent,andthereducedpriceisthendiscountedby10percent。Thisseriesofsuccessivediscountsisequivalenttoasinglediscountof(A)20%(B)19%(C)18%(D)11%(E)10%4。If1212=+ytheny=(A)–2(B)21−(C)21(D)2GMAT数学PROBLEMSOLVING33(E)35。Ifarectangularphotographthatis10incheswideby15incheslongistobeenlargedsothatthewidthwillbe22inchesandtheratioofwidthtolengthwillbeunchanged,thenthelength,ininches,oftheenlargedphotographwillbe(A)33(B)32(C)30(D)27(E)256。

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