GMAT 94题

1.Eachpersonattendingafund-raisingpartyforacertainclubwaschargedthesameadmissionfee.Howmanypeopleattendedtheparty?(1)Iftheadmissionfeehadbeen$0.75lessand100morepeoplehadattended,theclubwouldhavereceivedthesameamountinadmissionfees.(2)Iftheadmissionfeehadbeen$1.50moreand100fewerpeoplehadattended,theclubwouldhavereceivedthesameamountinadmissionfees.2.Henrypurchased3itemsduringasale.Hereceiveda20percentdiscountofftheregularpriceofthemostexpensiveitemanda10percentdiscountofftheregularpriceofeachoftheother2items.Wasthetotalamountofthe3discountsgreaterthan15percentofthesumoftheregularpricesofthe3items?(1)Theregularpriceofthemostexpensiveitemwas$50,andtheregularpriceofthenextmostexpensiveitemwas$20.(2)Theregularpriceoftheleastexpensiveitemwas$15.3.Aninsurancecompanyhasacontractwithamedicallaboratorytopayadiscountedpriceforacertainmedicaltestperformedonpatientsreferredtothelaboratorybytheinsurancecompany.Ifthelaboratory'soriginalbillforthismedicaltestonapatientreferredbytheinsurancecompanyis$230,whatisthepercentdiscountspecifiedbythecontractbetweenthelaboratoryandtheinsurancecompany?(1)Theinsurancecompanyisrequiredtopayonly20percentoftheoriginalbillforthetest.(2)Theinsurancecompanyisrequiredtopay$46forthetest.4.Acontractorcombinedxtonsofagravelmixturethatcontained10percentgravelG,byweight,withytonsofamixturethatcontained2percentgravelG,byweight,toproduceztonsofamixturethatwas5percentgravelG,byweight.Whatisthevalueofx?(1)y=10(2)z=165.Howmanyofthestudentsinacertainclassaretakingbothahistoryandasciencecourse?(1)Ofallthestudentsintheclass,50aretakingahistorycourse.(2)Ofallthestudentsintheclass,70aretakingasciencecourse.6.Patbought5poundsofapples.HowmanypoundsofpearscouldPathaveboughtforthesameamountofmoney?(1)Onepoundofpearscosts$0.50morethanonepoundofapples.(2)Onepoundofpearscosts1timesasmuchasonepoundofapples.7.Duringa40-miletrip,Marlatraveledatanaveragespeedofxmilesperhourforthefirstymilesofthetripandatanaveragespeedof1.25xmilesperhourforthelast40-ymilesofthetrip.ThetimethatMarlatooktotravelthe40mileswaswhatpercentofthetimeitwouldhavetakenherifshehadtraveledatanaveragespeedofxmilesperhourfortheentiretrip?(1)x=48(2)y=208.Acertaincompanydividesitstotaladvertisingbudgetintotelevision,radio,newspaper,andmagazinebudgetsintheratioof8:7:3:2,respectively.Howmanydollarsareintheradiobudget?(1)Thetelevisionbudgetis$18,750morethanthenewspaperbudget.(2)Themagazinebudgetis$7,500.9.Thesequencea1,a2,a3,...,anofnintegersissuchthatak=kifkisoddandak=-ak-1ifkiseven.Isthesumofthetermsinthesequencepositive?(1)nisodd.(2)anispositive.10.ThepointsA,B,C,andDareonanumberline,notnecessarilyinthatorder.IfthedistancebetweenAandBis18andthedistancebetweenCandDis8,whatisthedistancebetweenBandD?(1)ThedistancebetweenCandAisthesameasthedistancebetweenCandB.(2)AistotheleftofDonthenumberline.11.Atacertaincompany,theaverage(arithmeticmean)numberofyearsofexperienceis9.8yearsforthemaleemployeesand9.1yearsforthefemaleemployees.Whatistheratioofthenumberofthecompany'smaleemployeestothenumberofthecompany'sfemaleemployees?(1)Thereare52maleemployeesatthecompany.(2)Theaveragenumberofyearsofexperienceforthecompany'smaleandfemaleemployeescombinedis9.3years.12.Anattorneychargedafeeforestateplanningservicesforacertainestate.Theattorney'sfeewaswhatpercentoftheassessedvalueoftheestate?(1)Theassessedvalueoftheestatewas$1.2million.(2)Theattorneycharged$2,400fortheestateplanningservices.13.Duringaone-daysale,astoresoldeachsweaterofacertaintypefor$30morethanthestore'scosttopurchaseeachsweater.Howmanyofthesesweatersweresoldduringthesale?(1)Duringthesale,thetotalrevenuefromthesaleofthesesweaterswas$270.(2)Duringthesale,thestoresoldeachofthesesweatersatapricethatwas50percentgreaterthanthestore'scosttopurchaseeachsweater.14.Anintegergreaterthan1thatisnotprimeiscalledcomposite.Ifthetwo-digitintegernisgreaterthan20,isncomposite?(1)Thetensdigitofnisafactoroftheunitsdigitofn.(2)Thetensdigitofnis2.15.Ifxisaninteger,is(x2+1)(x+5)anevennumber?(1)xisanoddnumber.(2)Eachprimefactorofx2isgreaterthan7.16.Acertaintheaterhasatotalof884seats,ofwhich500areorchestraseatsandtherestarebalconyseats.Whenticketsforalltheseatsinthetheateraresold,thetotalrevenuefromticketsalesis$34,600.Whatwasthetheater'stotalrevenuefromticketsalesforlastnight'sperformance?(1)Thepriceofanorchestraseatticketistwicethepriceofabalconyseatticket.(2)Forlastnight'sperformance,ticketsforallthebalconyseatsweresold,butonly80percentoftheticketsfortheorchestraseatsweresold.17.Atacertainpetshop,ofthepetsaredogsandofthepetsarebirds.Howmanyofthepetsaredogs?(1)Thereare30birdsatthepetshop.(2)Thereare20moredogsthanbirdsatthepetshop.18.IfittookCarloshourtocyclefromhishousetothelibraryyesterday,wasthedistancethathecycledgreaterthan6miles?(Note:1mile=5,280feet)(1)TheaveragespeedatwhichCarloscycledfromhishousetothelibraryyesterdaywasgreaterthan16feetpersecond.(2)TheaveragespeedatwhichCarloscycledfromhishousetothelibraryyesterdaywaslessthan18feetpersecond.19.Tofillanorderonschedule,amanufacturerhadtoproduce1,000toolsperdayforndays.Whatisthevalueofn?(1)Becauseofproductionproblems,themanufacturerproducedonly600toolsperdayduringthefirst5days.(2)Becauseofproductionproblems,themanufacturerhadtoproduce1,500toolsperdayoneachofthelast4daysinordertomeettheschedule.20.Ifxisapositiveinteger,whatistheleastcommonmultipleofx,6,and9?(1)Theleastcommonmultipleofxand6is30.(2)Theleastcommonmultipleofxand9is45.21.If$1,000isdepositedinacertainbankaccountandremainsintheaccountalongwithanyaccumulatedinterest,thedollaramountofinterest,I,earnedbythedepositinthefirstnyearsisgivenbytheformulaI=1000〔(1+)n-1〕,whererpercentistheannualinterestratepaidbythebank.Istheannualinterestratepaidbythebankgreaterthan8percent?(1)Thedepositearnsatotalof$210ininterestinthefirsttwoyears.(2)(1+)2>1.1522.Onherwayhomefromwork,Janetdrivesthroughseveraltollbooths.Isthereapairofthesetollboothsthatarelessthan10milesapart?(1)Thefirsttollboothandthelasttollboothare25milesapart.(2)Janetdrivesthrough4tollboothsonherwayhomefromwork.23.Eachemployeeonacertaintaskforceiseitheramanageroradirector.Whatpercentoftheemployeesonthetaskforcearedirectors?(1)Theaverage(arithmeticmean)salaryofthemanagersonthetaskforceis$5,000lessthantheaveragesalaryofallemployeesonthetaskforce.(2)Theaverage(arithmeticmean)salaryofthedirectorsonthetaskforceis$15,000greaterthantheaveragesalaryofallemployeesonthetaskforce.24.Ifthesymbol△representseitheradditionormultiplication,whichoperationdoesitrepresent?(1)a△b=b△aforallnumbersaandb.(2)a△(b–c)=(a△b)–(a△c)forallnumbersa,b,andc.25.Eachemployeeonacertaintaskforceiseitheramanageroradirector.Whatpercentoftheemployeesonthetaskforcearedirectors?(1)Theaverage(arithmeticmean)salaryofthemanagersonthetaskforceis$5,000lessthantheaveragesalaryofallemployeesonthetaskforce.(2)Theaverage(arithmeticmean)salaryofthedirectorsonthetaskforceis$15,000greaterthantheaveragesalaryofallemployeesonthetaskforce.26.Inthexy-plane,doesthelinewithequationy=3x+2containthepoint(r,s)?(1)(3r+2-s)(4r+9-s)=0(2)(4r-6-s)(3r+2-s)=027.Ifm,r,x,andyarepositive,istheratioofmtorequaltotheratioofxtoy?(1)Theratioofmtoyisequaltotheratioofxtor.(2)Theratioofm+xtor+yisequaltotheratioofxtoy.28.Ifa,b,k,andmarepositiveintegers,isakafactorofbm?(1)aisafactorofb.(2)km29.Ifxyz>0,isx>0?(1)xy>0(2)xz>030.Awoodenrodiscutintotwopieces.Whatisthelengthofthelongerpiece?(1)Oneofthepiecesis20incheslongerthantheotherpiece.(2)Thelengthoftheshorterpieceisthelengthofthelongerpiece.31.Thesumofpositiveintegersxandyis77.Whatisthevalueofxy?(1)x=y+1(2)xandyhavethesametensdigit.32.DidittakePeimorethan2hourstowalkadistanceof10milesalongacertaintrail?(1mile=1.6kilometers,roundedtothenearesttenth.)(1)Peiwalkedthisdistanceatanaveragerateoflessthan6.4kilometersperhour.(2)Onaverage,ittookPeimorethan9minutesperkilometertowalkthisdistance.33.Astoresellsmilkincartonsoftwosizes,one-halfgallonandone-quartergallon.Ifthestoresoldatotalof300cartonsofmilkyesterday,howmanygallonsofmilkdiditsellyesterday?(1)Yesterdaythestoresold120one-quarter-galloncartonsofmilk.(2)Yesterdaythestoresold90gallonsofmilkinone-half-galloncartons.34.Ifnisapositiveintegerandristheremainderwhen4+7nisdividedby3,whatisthevalueofr?(1)n+1isdivisibleby3.(2)n>2035.Eachofthe25ballsinacertainboxiseitherred,blue,orwhiteandhasanumberfrom1to10paintedonit.Ifoneballistobeselectedatrandomfromthebox,whatistheprobabilitythattheballselectedwilleitherbewhiteorhaveanevennumberpaintedonit?(1)Theprobabilitythattheballwillbothbewhiteandhaveanevennumberpaintedonitis0.(2)Theprobabilitythattheballwillbewhiteminustheprobabilitythattheballwillhaveanevennumberpaintedonitis0.2.36.Ifnisapositiveintegerandristheremainderwhen(n-1)(n+1)isdividedby24,whatisthevalueofr?(1)nisnotdivisibleby2.(2)nisnotdivisibleby3.37.IfCompanyMorderedatotalof50computersandprintersandCompanyNorderedatotalof60computersandprinters,howmanycomputersdidCompanyMorder?(1)CompanyMandCompanyNorderedthesamenumberofcomputers.(2)CompanyNordered10moreprintersthanCompanyM.38.Iftheaverage(arithmeticmean)ofthefivenumbersx,7,2,16,and11isequaltothemedianofthefivenumbers,whatisthevalueofx?(1)7<x<11(2)xisthemedianofthefivenumbers.39.Whatfractionofthisyear'sgraduatingstudentsatacertaincollegearemales?(1)Ofthisyear'sgraduatingstudents,33percentofthemalesand20percentofthefemalestransferredfromanothercollege.(2)Ofthisyear'sgraduatingstudents,25percenttransferredfromanothercollege.40.Lindaputanamountofmoneyintoeachoftwonewinvestments,AandB,thatpaysimpleannualinterest.IftheannualinterestrateofinvestmentBis1.5timesthatofinvestmentA,whatamountdidLindaputintoinvestmentA?(1)Theinterestfor1yearis$50forinvestmentAand$150forinvestmentB.(2)TheamountthatLindaputintoinvestmentBistwicetheamountthatsheputintoinvestmentA.41.Atatwo-dayseminar,90percentofthoseregisteredattendedtheseminaronthefirstday.Whatpercentofthoseregistereddidnotattendtheseminaroneitherday?(1)Atotalof1,000peopleregisteredforthetwo-dayseminar.(2)Ofthoseregistered,80percentattendedtheseminaronthesecondday.42.Ofthe1,400collegeteacherssurveyed,42percentsaidthattheyconsideredengaginginresearchanessentialgoal.Howmanyofthecollegeteacherssurveyedwerewomen?(1)Inthesurvey,36percentofthemenand50percentofthewomensaidthattheyconsideredengaginginresearchanessentialgoal.(2)Inthesurvey,288mensaidthattheyconsideredengaginginresearchanessentialgoal.43.Inthexy-coordinateplane,theslopeoflinelis.Doeslinelpassthroughthepoint(-,)?(1)Linelpassesthroughthepoint(4,4).(2)Linelpassesthroughthepoint(-4,-2).44.Ifx,y,andzareintegersandxy+zisanoddinteger,isxaneveninteger?(1)xy+xzisaneveninteger.(2)y+xzisanoddinteger.45.Onthenumberline,thedistancebetweenxandyisgreaterthanthedistancebetweenxandz.Doeszliebetweenxandyonthenumberline?(1)xyz<0(2)xy<046.Iftheintegersaandnaregreaterthan1andtheproductofthefirst8positiveintegersisamultipleofan,whatisthevalueofa?(1)an=64(2)n=647.Ifnandtarepositiveintegers,whatisthegreatestprimefactoroftheproductnt?(1)Thegreatestcommonfactorofnandtis5.(2)Theleastcommonmultipleofnandtis105.条件1不充足，条件2中105包含有质数因子3、5、7，nt一定包含有3、5、7，则最大质数因子为748.Is|x-y|>|x|-|y|?(1)y<x(2)xy<049.Ifm,k,x,andyarepositivenumbers,ismx+ky>kx+my?(1)m>k(2)x>ymx+ky>kx+my即要求（m-k）（x-y）是否大于0，明白这个以后就很好选择了。50.IfNisapositiveinteger,istheunitsdigitofNequaltozero?(1)14and35arefactorsofN.(2)N=(25)(32)(57)(76)由条件1可知，N包含有因子2和5，即10，那么N一定能被10整除，即N的个位数字为0。条件2很明显包含条件1。51.Inthexy-plane,whatisthey-interceptoflinel(1)Theslopeoflinelis3timesitsy-intercept.(2)Thex-interceptoflinelis-.直线表达式：y=kx+b，条件1说明k=3b，条件2说明-k/3+b=0，即k=3b，两个条件相同，即求不出k、b。52.ThesumoftheintegersinlistSisthesameasthesumoftheintegersinlistT.DoesScontainmoreintegersthanT?(1)Theaverage(arithmeticmean)oftheintegersinSislessthantheaverageoftheintegersinT.(2)ThemedianoftheintegersinSisgreaterthanthemedianoftheintegersinT.53.Ifxandyarepositiveintegers,istheproductxyeven?(1)5x-4yiseven.(2)6x+7yiseven.54.Ifxandyarepositiveintegers,whatisthevalueofxy?(1)Thegreatestcommonfactorofxandyis10.(2)Theleastcommonmultipleofxandyis180.x、y的乘积为最小公倍数与最大公约数的乘积。55.Iftherearemorethantwonumbersinacertainlist,iseachofthenumbersinthelistequalto0?(1)Theproductofanytwonumbersinthelistisequalto0.(2)Thesumofanytwonumbersinthelistisequalto0.条件1明显不行，条件2中，根据题意知道序列中至少有3个数字，从中任意挑3个数字x、y、z，则x+y=0，x+z=0，y+z=0，算得x=y=z=0，由于是任意挑选3个数字，那么可知任意数字都为0。56.AmanufacturerconductedasurveytodeterminehowmanypeoplebuyproductsPandQ.WhatfractionofthepeoplesurveyedsaidthattheybuyneitherproductPnorproductQ?(1)ofthepeoplesurveyedsaidthattheybuyproductPbutnotproductQ.(2)ofthepeoplesurveyedsaidthattheybuyproductQ.57.Arexandybothpositive?(1)2x–2y=1(2)>158.Inthefigureshown,whatisthevalueofx?(1)ThelengthoflinesegmentQRisequaltothelengthoflinesegmentRS.(2)ThelengthoflinesegmentSTisequaltothelengthoflinesegmentTU.这题要用到等腰三角形、三角形内角和、平角等 知识点 高中化学知识点免费下载体育概论知识点下载名人传知识点免费下载线性代数知识点汇总下载高中化学知识点免费下载 ，word上不好写，可以看纸上的 答案 八年级地理上册填图题岩土工程勘察试题省略号的作用及举例应急救援安全知识车间5s试题及答案 。59.Inacertainyear,thedifferencebetweenMary'sandJim'sannualsalarieswastwicethedifferencebetweenMary'sandKate'sannualsalaries.IfMary'sannualsalarywasthehighestofthe3people,whatwastheaverage(arithmeticmean)annualsalaryofthe3peoplethatyear?(1)Jim'sannualsalarywas$30,000thatyear.(2)Kate'sannualsalarywas$40,000thatyear.根据题目条件意思，M-J=2(M-K)，即M+J=2K，那么要求的平均值为（M+J+K）/3=K，因此条件2足够了。60.Thepositiveintegersx,y,andzaresuchthatxisafactorofyandyisafactorofz.Iszeven?(1)xiseven.(2)yiseven.61.JackandMarkbothreceivedhourlywageincreasesof6percent.Afterthewageincreases,Jack'shourlywagewashowmanydollarsperhourmorethanMark's?(1)Beforethewageincreases,Jack'shourlywagewas$5.00perhourmorethanMark's.(2)Beforethewageincreases,theratioofJack'shourlywagetoMark'shourlywagewas4to3.62.Isxbetween0and1?(1)xisbetween-and(2)ismorethanx.63.If0<x<y,whatisthevalueof?(1)x2+y2=3xy(2)xy=364.Ifx,y,andzareintegersgreaterthan1,whatisthevalueofx+y+z?(1)xyz=70(2)=65.Isp+pz=p?(1)p=0(2)z=066.Onthenumberlineshown,iszerohalfwaybetweenrands?(1)sistotherightofzero.(2)Thedistancebetweentandristhesameasthedistancebetweentand-s.根据条件1判断-s在s的左边还是右边，根据条件2判断出r与-s重合，0必定在-s（r）与s中点。67.Iftheproductofthethreedigitsofthepositiveintegerkis14,whatisthevalueofk?(1)kisanoddinteger.(2)k<70014=7*2*1，只有六种情况：127、172、217、271、721、712，然后进行分析。68.Ofthe75housesinacertaincommunity,48haveapatio.Howmanyofthehousesinthecommunityhaveaswimmingpool?(1)38ofthehousesinthecommunityhaveapatiobutdonothaveaswimmingpool.(2)Thenumberofhousesinthecommunitythathaveapatioandaswimmingpoolisequaltothenumberofhousesinthecommunitythathaveneitheraswimmingpoolnorapatio.画方格问题，弄清楚四类人即可分析出来69.Theattendeesatacertainconventionpurchasedatotalof15,000books.Howmanyoftheseattendeeswerefemale?(1)Therewasatotalof4,000attendeesattheconvention.(2)Themaleattendeespurchasedanaverage(arithmeticmean)of3bookseach,andthefemaleattendeespurchasedanaverageof5bookseach.70.Ifxandyarepositiveintegers,whatisthevalueofx+y?(1)2x3y=72(2)2x2y=3272=2332则x=3,y=2，2x2y=2x+y71.Whatisthevalueofh?(1)h2=36(2)h2+12h=-3672.Howmanyoddintegersaregreaterthantheintegerxandlessthantheintegery?(1)Thereare12evenintegersgreaterthanxandlessthany.(2)Thereare24integersgreaterthanxandlessthany.73.Jason'ssalaryandKaren'ssalarywereeachppercentgreaterin1998thanin1995.Whatisthevalueofp?(1)In1995Karen'ssalarywas$2,000greaterthanJason's.(2)In1998Karen'ssalarywas$2,440greaterthanJason's.74.Didoneofthe3membersofacertainteamsellatleast2raffleticketsyesterday?(1)The3memberssoldatotalof6raffleticketsyesterday.(2)No2ofthememberssoldthesamenumberofraffleticketsyesterday.思路为：若没有人卖的超过2件，那么只有两种情况，0件或者1件，分别代入条件1、2，发现都不成立，因此至少有一个人卖了至少两件。75.Ifsandtaretwodifferentnumbersonthenumberline,iss+tequalto0?(1)Thedistancebetweensand0isthesameasthedistancebetweentand0.(2)0isbetweensandt.76.Ofthe1,000companiesrespondingtoacertainsurvey,whatpercentindicatedthattheyhadabusinessrecoveryplan?(1)200ofthecompaniesdidnotindicatethattheyhadabusinessrecoveryplan.(2)Thenumberofcompaniesthatindicatedthattheyhadabusinessrecoveryplanwas4timesthenumberthatdidnotindicatethattheyhadabusinessrecoveryplan.77.Marthaboughtanarmchairandacoffeetableatanauctionandsoldbothitemsatherstore.Hergrossprofitfromthepurchaseandsaleofthearmchairwaswhatpercentgreaterthanhergrossprofitfromthepurchaseandsaleofthecoffeetable?(1)Marthapaid10percentmoreforthearmchairthanforthecoffeetable.(2)Marthasoldthearmchairfor20percentmorethanshesoldthecoffeetable.假设coffeetable的进价和售价分别为：x、y，那么armchair的进价和售价为1.1x、1.2y，则coffeetable的利润为y-x，armchair的利润为1.2y-1.1x，要求的百分数的表达式为：[（1.2y-1.1x）-（y-x）]/（y-x）=（0.2y-0.1x）/（y-x），而无法求得其值78.EachemployeeofCompanyZisanemployeeofeitherDivisionXorDivisionY,butnotboth.Ifeachdivisionhassomepart-timeemployees,istheratioofthenumberoffull-timeemployeestothenumberofpart-timeemployeesgreaterforDivisionXthanforCompanyZ?(1)Theratioofthenumberoffull-timeemployeestothenumberofpart-timeemployeesislessforDivisionYthanforCompanyZ.(2)Morethanhalfofthefull-timeemployeesofCompanyZareemployeesofDivisionX,andmorethanhalfofthepart-timeemployeesofCompanyZareemployeesofDivisionY.79.Whatistheremainderwhenthepositiveintegerxisdividedby6?(1)Whenxisdividedby2,theremainderis1;andwhenxisdividedby3,theremainderis0.(2)Whenxisdividedby12,theremainderis3.80.Onacertainsight-seeingtour,theratioofthenumberofwomentothenumberofchildrenwas5to2.Whatwasthenumberofmenonthesight-seeingtour?(1)Onthesight-seeingtour,theratioofthenumberofchildrentothenumberofmenwas5to11.(2)Thenumberofwomenonthesight-seeingtourwaslessthan30.81.Ellencanpurchaseacertaincomputeratalocalstoreatthepriceofpdollarsandpaya6percentsalestax.Alternatively,Ellencanpurchasethesamecomputerfromacatalogforatotalofqdollars,includingalltaxesandshippingcosts.WillitcostmoreforEllentopurchasethecomputerfromthelocalstorethanfromthecatalog?(1)q-p<50(2)q=1,15082.Ifpisapositiveinteger,whatisthevalueofp?(1)p/4isaprimenumber(2)pisdivisibleby3.83.Isy<2x?(1)(2)84.Isx>y?(1)x+y<0(2)x-y>085.Foreachmonthofnextyear,CompanyR'smonthlyrevenuetargetisxdollarsgreaterthanitsmonthlyrevenuetargetfortheprecedingmonth.WhatisCompanyR'srevenuetargetforMarchofnextyear?(1)CompanyR'srevenuetargetforDecemberofnextyearis$310,000.(2)CompanyR'srevenuetargetforSeptemberofnextyearis$30,000greaterthanitsrevenuetargetforJuneofnextyear.86.Ism+z>0?(1)m-3z>0(2)4z-m>087.Ifkisapositiveinteger,then20kisdivisiblebyhowmanydifferentpositiveintegers?(1)kisprime.(2)k=788.Thismorning,acertainsugarcontainerwasfull.Sincethensomeofthesugarfromthiscontainerwasusedtomakecookies.Ifnoothersugarwasremovedfromoraddedtothecontainer,bywhatpercentdidtheamountofsugarinthecontainerdecrease?(1)Theamountofsugarinthecontaineraftermakingthecookieswouldneedtobeincreasedby30percenttofillthecontainer.(2)Sixcupsofsugarfromthecontainerwereusedtomakethecookies.89.Ifaandbarepositivenumbers,whatarethecoordinatesofthemidpointoflinesegmentCDinthexy-plane?(1)ThecoordinatesofCare(a,1-b).(2)ThecoordinatesofDare(1-a,b).90.Thecostofasquareslabisproportionaltoitsthicknessandalsoproportionaltothesquareofitslength.Whatisthecostofasquareslabthatis3meterslongand0.1meterthick?(1)Thecostofasquareslabthatis2meterslongand0.2meterthickis$160morethanthecostofasquareslabthatis2meterslongand0.1meterthick.4y2x32xy(2)Thecostofasquareslabthatis3meterslongand0.1meterthickis$200morethanthecostofasquareslabthatis2meterslongand0.1meterthick.91.IfBobproduces36orfeweritemsinaweek,heispaidxdollarsperitem.IfBobproducesmorethan36itemsinaweek,heispaidxdollarsperitemforthefirst36itemsand1.5timesthatamountforeachadditionalitem.HowmanyitemsdidBobproducelastweek?(1)LastweekBobwaspaidatotalof$480fortheitemsthatheproducedthatweek.(2)ThisweekBobproduced2itemsmorethanlastweekandwaspaidatotalof$510fortheitemsthatheproducedthisweek.92.Isx<y?(1)2x<3y(2)xy>093.a1,a2,a3,...,a15Inthesequenceshown,an=an-1+k,whereandkisanonzeroconstant.Howmanyofthetermsinthesequencearegreaterthan10?(1)a1=24(2)a8=1094.Is4z>-6?(1)z<7(2)z>-1ANSWER：CADDEBBDDEBCCADCDEEDACCBCCBCCCDDDAECEDCEEADAEBBBCDEADCBCCCBDABAADCEBCDBBCDADEDDCCCDBCCBACDEEBB