微觀經(jīng)濟(jì)學(xué)練習(xí)題以及答案英文版

Chapter01

ThinkingLikeanEconomist

MultipleChoiceQuestions

1.Economicsisbestdefinedasthestudyof:

A.pricesandquantities.

B.inflationandinterestrates.

C.howpeoplemakechoicesundertheconditionsofscarcityandtheresultsof

thosechoices.

D.wagesandincomes.

2.Economicquestionsalwaysdealwith:

A.financialmatters.

B.politicalmatters.

C.insufficientresources.

D.choiceinthefaceoflimitedresources.

3.Therangeoftopicsorissuesthatfitwithinthedefinitionofeconomicsis:

A.limitedtomarketactivities,e.g.,buyingsoap.

B.limitedtoindividualsandfirms.

C.extremelywide,requiringonlytheideasofchoiceandscarcity.

D.verylimited.

4.Thecentralconcernofeconomicsis:

A.poverty.

B.scarcity.

C.wealthaccumulation.

D.overconsumption.

5.Thescarcityprincipleindicatesthat:

A.nomatterhowmuchonehas,itisneverenough.

B.comparedto100yearsago,individualshavelesstimetoday.

C.withlimitedresources,havingmoreof"this"meanshavinglessof"that."

D.becausetradeoffsmustbemade,resourcesarethereforescarce.

6.Thelogicalimplicationofthescarcityprincipleisthat:

A.onewillneverbesatisfiedwithwhatonehas.

B.aswealthincreases,makingchoicesbecomeslessnecessary.

C.aswealthdecreases,makingchoicesbecomeslessnecessary.

D.choicesmustbemade.

7.Ifalltheworld'sresourcesweretomagicallyincreaseahundredfold,then:

A.thescarcityprinciplewouldstillgovernbehavior.

B.economicswouldnolongerberelevant.

C.thescarcityprinciplewoulddisappear.

D.tradeoffswouldbecomeunnecessary.

8.Theprincipleofscarcityappliesto:

A.thepoorexclusively.

B.allconsumers.

C.allfirms.

D.everyone-consumers,firms,governments,andnations.

9.Attheveryleast,JoeAverageandBillGatesarebothidenticallylimitedby:

A.theirwealth.

B.the24hoursthatcompriseaday.

C.theirknowledge.

D.theirinfluence.

10.ForestisamountainmanlivingincompleteisolationinMontana.Heis

completelyself-sufficientthroughhunting,fishing,andfarming.Hehasnotbeen

inthecitytobuyanythinginfiveyears.Onecaninfer:

A.thescarcityprincipledoesnotapplytoForest.

B.Forestisnotrequiredtomakechoices.

C.thescarcityprinciplestillappliesbecausemorehuntingmeanslessfishingand

farming.

D.Forestisverysatisfied.

11.Thescarcityprincipleappliesto:

A.alldecisions.

B.onlymarketdecisions,e.g.,buyingacar.

C.onlynon-marketdecisions,e.g.,watchingasunset.

D.onlythepoor.

12.Chrishasaone-hourbreakbetweenclasseseveryWednesday.Chriscan

eitherstayatthelibraryandstudyorgotothegymandworkout.Thedecision

Chrismustmakeis:

A.notaneconomicproblembecauseneitheronecostsmoney.

B.notaneconomicproblembecauseit'sanhourthatiswastednomatterwhat

Chrisdoes.

C.aneconomicproblembecausethetuitionChrispayscoversboththegymand

thelibrary.

D.aneconomicproblembecauseChrishasonlyonehourduringwhichhecan

studyorworkout.

13.Joshwantstogotothefootballgamethisweekend,buthehasapaperdueon

Monday.Itwilltakehimthewholeweekendtowritethepaper.Joshdecidedto

stayhomeandworkonthepaper.Accordingtothescarcityprinciple,thereason

Joshdidn'tgotothegameisthat:

A.Joshprefersschoolworktofootballgames.

B.writingthepaperiseasierthangoingtothegame.

C.Joshdoesn'thaveenoughtimeforwritingthepaperandgoingtothegame.

D.it'stooexpensivetogotothegame.

14.WhetherstudyingthesizeoftheU.S.economyorthenumberofchildrena

couplewillchoosetohave,theunifyingconceptisthatwantsare:

A.limited,resourcesarelimited,andthuschoicesmustbemade.

B.unlimited,resourcesarelimited,andthuschoicesmustbemade.

C.unlimited,resourcesarelimitedtosomebutnottoothers,andthussome

peoplemustmakechoices.

D.unlimited,resourcesarelimited,andthusgovernmentneedstodomore.

15.Thecost-benefitprincipleindicatesthatanactionshouldbetaken:

A.ifthetotalbenefitsexceedthetotalcosts.

B.iftheaveragebenefitsexceedtheaveragecosts.

C.ifthenetbenefit(benefitminuscost)iszero.

D.iftheextrabenefitisgreaterthanorequaltotheextracosts.

16.Whenapersondecidestopursueanactivityaslongastheextrabenefitsareat

leastequaltotheextracosts,thatpersonis:

A.violatingthecost-benefitprinciple.

B.followingthescarcityprinciple.

C.followingthecost-benefitprinciple.

D.pursuingtheactivitytoolong.

17.Choosingtostudyforanexamuntiltheextrabenefit(improvedscore)equals

theextracost(mentalfatigue)is:

A.notrational.

B.anapplicationofthecost-benefitprinciple.

C.anapplicationofthescarcityprinciple.

D.therelevantopportunitycost.

18.Thescarcityprincipletellsusthat,andthecost-benefitprinciple

tellsus.

A.choicesmustbemade;howtomakethechoices

B.choicesmustbemade;thatthecostscanneveroutweighthebenefitsofthe

choices

C.raregoodsareexpensive;thatthecostsshouldoutweighthebenefitsofthe

choices

D.raregoodsareexpensive;thatthecostscanneveroutweighthebenefitsofthe

choices

19.Accordingtothecost-benefitprinciple:

A.thelowestcostactivityusuallygivesthelowestbenefit.

B.apersonshouldalwayschoosetheactivitywiththelowestcost.

C.apersonshouldalwayschoosetheactivitywiththegreatestbenefit.

D.theextracostsandbenefitsofanactivityaremoreimportantconsiderations

thanthetotalcostsandbenefits.

20.Arationalpersonisonewho:

A.isreasonable.

B.makeschoicesthatareeasilyunderstood.

C.possesseswell-definedgoalsandseekstoachievethem.

D.ishighlycynical.

21.TheseventhglassofsodathatTimconsumeswillproduceanextrabenefitof

10centsandhasanextracostofzero(Timiseatingatthecafeteria).The

cost-benefitprinciplepredictsthatTimwill:

A.realizehehashadtoomuchsodatodrinkandgohome.

B.drinktheseventhglassandcontinueuntilthemarginalbenefitofdrinking

anotherglassofsodaiszero.

C.volunteertoemptyoutthefountain.

D.notdrinktheseventhglass.

22.Janiemusteithermowthelawnorwashclothes,earningherabenefitof$30

or$45,respectively.Shedislikesbothequallyandtheybothtakethesame

amountoftime.Janiewillthereforechoosetobecausetheeconomic

surplusis.

A.mowthelawn;greater

B.washclothes;greater

C.mowthelawn;smaller

D.washclothes;smaller

23.Deandecidedtoplaygolfratherthanpreparefortomorrow'sexamin

economics.Onecaninferthat:

A.Deanhasmadeanirrationalchoice.

B.Deanisdoingpoorlyinhiseconomicsclass.

C.theeconomicsurplusfromplayinggolfexceededthesurplusfromstudying.

D.thecostofstudyingwaslessthanthecostofgolfing.

Larrywasacceptedatthreedifferentgraduateschools,andmustchooseone.

EliteUcosts$50,000peryearanddidnotofferLarryanyfinancialaid.Larry

valuesattendingEliteUat$60,000peryear.StateCollegecosts$30,000peryear,

andofferedLarryanannual$10,000scholarship.LarryvaluesattendingState

Collegeat$40,000peryear.NoNameUcosts$20,000peryear,andofferedLarry

afull$20,000annualscholarship.LarryvaluesattendingNoNameat$15,000per

year.

24.TheopportunitycostofattendingEliteUis:

A.$50,000

B.$10,000

C.$20,000

D.$15,000

25.TheopportunitycostofattendingStateCollegeis:

A.$30,000

B.$20,000

C.$15,000

D.$10,000

26.Larrymaximizeshissurplusbyattending:

A.EliteU,because$60,000isgreaterthanthebenefitattheotherschools.

B.StateCollege,becausethedifferencebetweenthebenefitandcostisgreatest

there.

C.NoNameU,becauseLarryhasafullscholarshipthere.

D.EliteU,becausetheopportunitycostsofattendingEliteUarethelowest.

27.LarryhasdecidedtogotoEliteU.Assumingthatallofthevaluesdescribed

arecorrect,forLarrytodecideonEliteU,hemusthave:

A.calculatedhissurplusfromeachchoiceandpickedtheonewiththehighest

surplus.

B.underestimatedthebenefitsofattendingNoName.

C.miscalculatedthesurplusofattendingEliteU.

D.determinedtheopportunitycostofeachchoiceandpickedtheonewiththe

lowestopportunitycost.

28.Jenspendsherafternoonatthebeach,paying$1torentabeachumbrellaand

$11forfoodanddrinksratherthanspendinganequalamountofmoneytogotoa

movie.Theopportunitycostofgoingtothebeachis:

A.the$12shespentontheumbrella,foodanddrinks.

B.only$1becauseshewouldhavespentthemoneyonfoodanddrinkswhether

ornotshewenttothebeach.

C.themovieshemissedseeing.

D.themovieshemissedseeingplusthe$12shespentontheumbrella,foodand

drinks.

29.Relativetoapersonwhoearnsminimumwage,apersonwhoearns$30per

hourhas:

A.aloweropportunitycostofworkinglongerhours.

B.ahigheropportunitycostoftakingadayoff.

C.aloweropportunitycostofdrivingfarthertowork.

D.thesameopportunitycostofspendingtimeonleisureactivities.

30.Theopportunitycostofanactivityisthevalueof:

A.analternativeforgone.

B.thenext-bestalternativeforgone.

C.theleast-bestalternativeforgone.

D.thedifferencebetweenthechosenactivityandthenext-bestalternative

forgone.

31.Amyisthinkingaboutgoingtothemoviestonight.Aticketcosts$7andshe

willhavetocancelherdog-sittingjobthatpays$30.Thecostofseeingthemovie

is:

A.$7.

B.$30.

C.$37.

D.$37minusthebenefitofseeingthemovie.

32.Economicsurplusis:

A.thebenefitgainedbytakinganaction.

B.thepricepaidtotakeanaction.

C.thedifferencebetweenthebenefitgainedandthecostincurredoftakingan

action.

D.thewagesomeonewouldhavetoearninordertotakeanaction.

33.TheGovernorofyourstatehascutthebudgetfortheUniversityandincreased

spendingonMedicaid.Thisisanexampleof:

A.thepitfallsofconsideringaveragecostsinsteadofmarginalcosts.

B.poornormativeeconomicdecisionmaking.

C.poorpositiveeconomicdecisionmaking.

D.choiceinthefaceoflimitedresources.

34.Sallyearned$25,000peryearbeforeshebecameamother.Aftershebecame

amother,shetoldheremployerthatheropportunitycostofworkingisnow

$50,000,andsosheisnotwillingtoworkforanythingless.Herdecisionisbased

on:

A.thehighcostofraisingachild.

B.herdesiretosaveforherchild'scollegeexpenses.

C.herincreasedvaluetoheremployer.

D.thevaluesheplacesonspendingtimewithherchild.

35.Alexreceivedafour-yearscholarshiptoStateU.thatcoveredtuitionandfees,

roomandboard,andbooksandsupplies.Asaresult:

A.attendingStateU.forfouryearsiscostlessforAlex.

B.AlexhasnoincentivetoworkhardwhileatStateU.

C.thecostofattendingStateU.istheamountofmoneyAlexcouldhaveearned

workingforfouryears.

D.thecostofattendingStateU.isthesumofthebenefitsAlexwouldhavehad

attendingeachofthefourotherschoolstowhichAlexhadbeenadmitted.

36.SupposeMaryiswillingtopayupto$15,000forausedFordpick-uptruck,

butshefindsonefor$12,000.Heris.

A.benefit;$12,000

B.cost;$15,000

C.economicsurplus;$3,000

D.economicsurplus;$12,000

37.Ingeneral,rationaldecisionmakingrequiresonetochoosetheactionsthat

yieldthe:

A.largesttotalbenefits.

B.smallesttotalcosts.

C.smallestnetbenefits.

D.largesteconomicsurpluses.

38.Supposethemostyouwouldbewillingtopayforaplanetickethomeis$250,

butyoubuyoneonlinefor$175.Theeconomicsurplusofbuyingtheonlineticket

is:

A.$175.

B.$250.

C.$75.

D.$0.

39.Theuseofeconomicmodels,likethecost-benefitprinciple,means

economistsbelievethat:

A.thisisexactlyhowpeoplechoosebetweenalternatives.

B.thisisareasonableabstractionofhowpeoplechoosebetweenalternatives.

C.thosewhoexplicitlymakedecisionsthiswayaresmarter.

D.withenougheducation,allpeoplewillstarttoexplicitlymakedecisionsthis

way.

40.Jennadecidestoseeamoviethatcosts$7fortheticketandhasanopportunity

costof$20.Afterthemovie,shesaystooneofherfriendsthatthemoviewasnot

worthit.Apparently:

A.Jennafailedtoapplythecost-benefitmodeltoherdecision.

B.Jennawasnotrational.

C.Jennaoverestimatedthebenefitsofthemovie.

D.Jennaunderestimatedthebenefitsofthemovie.

41.Mostofusmakesensibledecisionsmostofthetime,because:

A.weknowthecost-benefitprinciple.

B.subconsciouslyweareweighingcostsandbenefits.

C.mostpeopleknowaboutthescarcityprinciple.

D.weconducthypotheticalmentalauctionswhenwemakedecisions.

42.Supposeapersonmakesachoicethatseemsinconsistentwiththecost-benefit

principle.Whichofthefollowingstatementsrepresentsthemostreasonable

conclusiontodraw?

A.Theperson(explicitlyorimplicitly)over-estimatedthebenefitsor

under-estimatedthecostsorboth.

B.Thecost-benefitprincipleisrarelytrue.

C.Thepersondoesnotgrasphowdecisionsshouldbemade.

D.Thepersonissimplyirrational.

43.Economicmodelsareintendedto:

A.applytoallexamplesequallywell.

B.eliminatedifferencesinthewaypeoplebehave.

C.generalizeaboutpatternsindecision-making.

D.distinguisheconomicsstudentsfromeveryoneelse.

44.Economicmodelsclaimtobe:

A.reasonableabstractionsofhowpeoplemakechoices,highlightingthemost

importantfactors.

B.exactreplicationsofthedecision-makingprocesspeopleuse.

C.interestingchalkboardexerciseswithlittleapplicabilitytotherealworld.

D.exceptionallyaccuratemethodsofpredictingnearlyallbehaviorofeveryone.

45.Thecost-benefitmodelusedbyeconomistsis:

A.unrealisticbecauseitistoodetailedandspecifictoapplytoavarietyof

situations.

B.unrealisticbecauseeveryonecanthinkoftimeswhenheorsheviolatedthe

principle.

C.usefulbecauseeveryonefollowsitallofthetime.

D.usefulbecausemostpeoplefollowitmostofthetime.

46.Barryownsaclothingstoreinthemallandhasaskedtwoeconomic

consultantstodevelopmodelsofconsumerbehaviorthathecanusetoincrease

sales.Barryshouldchoosethemodelthat:

A.doesnotincludesimplifyingassumptions.

B.isthemostdetailedandcomplex.

C.assumesthatconsumersapplythecost-benefitprinciple.

D.predictsthatconsumerswillalwayspreferBarry'sstoretothecompeting

stores.

47.Economistsuseabstractmodelsbecause:

A.everyeconomicsituationisunique,soitisimpossibletomakegeneralizations.

B.everyeconomicsituationisessentiallythesame,sospecificdetailsare

unnecessary.

C.theyareusefulfordescribinggeneralpatternsofbehavior.

D.computershaveallowedeconomiststodevelopabstractmodels.

48.Mostpeoplemakesomedecisionsbasedonintuitionratherthancalculation.

Thisis:

A.irrational,becauseintuitionisoftenwrong.

B.consistentwiththeeconomicmodelofdecision-making,becausecalculating

costsandbenefitsleadstodecision-makingpitfalls.

C.consistentwiththeeconomicmodelbecausepeopleintuitivelycomparethe

relativecostsandbenefitsofthechoicestheyface.

D.inconsistentwiththeeconomicmodel,butrationalbecauseintuitiontakesinto

accountnon-financialconsiderations.

49.Moehasabigexamtomorrow.Heconsideredstudyingthisevening,but

decidedtogooutwithCurlyinstead.SinceMoealwayschoosesrationally,it

mustbetruethat:

A.theopportunitycostofstudyingtonightislessthanthevalueMoegetsfrom

spendingtimewithCurly.

B.theopportunitycostofstudyingtonightisequaltothevalueMoegetsfrom

spendingtimewithCurlyminusthecostofearningalowgradeontheexam.

C.MoegetsmorebenefitfromspendingtimewithCurlythanfromstudying.

D.MoegetslessbenefitfromspendingtimewithCurlythanfromstudying.

50.Ifonefailstoaccountforimplicitcostsindecisionmaking,thenapplyingthe

cost-benefitrulewillbeflawedbecause:

A.thebenefitswillbeoverstated.

B.thecostswillbeunderstated.

C.thebenefitswillbeunderstated.

D.thecostswillbeoverstated.

YourclassmatesfromtheUniversityofChicagoareplanningtogotoMiamifor

springbreak,andyouareundecidedaboutwhetheryoushouldgowiththem.The

round-tripairfaresare$600,butyouhaveafrequent-flyercouponworth$500that

youcouldusetopaypartoftheairfare.Allothercostsforthevacationareexactly

$900.Themostyouwouldbewillingtopayforthetripis$1400.Youronly

alternativeuseforyourfrequent-flyercouponisforyourtriptoAtlantatwo

weeksafterthebreaktoattendyoursister'sgraduation,whichyourparentsare

forcingyoutoattend.TheChicago-Atlantaround-tripairfaresare$450.

51.Ifyoudonotusethefrequent-flyercoupontofly,shouldyougotoMiami?

A.Yes,yourbenefitismorethanyourcost.

B.No,yourbenefitislessthanyourcost.

C.Yes,yourbenefitisequaltoyourcost.

D.No,becausetherearenobenefitsinthetrip.

52.WhatistheopportunitycostofusingthecouponfortheMiamitrip?

A.$100

B.$450

C.$500

D.$550

53.Ifyouusethefrequent-flyercoupontoflytoAtlanta,wouldyougetany

economicsurplusbymakingthetrip?

A.No,thereisalossof$50.

B.Yes,surplusof$350.

C.Yes,surplusof$400.

D.Yes,surplusof$100.

54.IftheChicago-Atlantaround-tripairfareis$350,shouldyougotoMiami?

A.No,thereisalossof$50.

B.No,thereisalossof$100.

C.Yes,thereiseconomicsurplusof$50.

D.Yes,thereiseconomicsurplusof$400.

55.Patearns$25,000peryear(aftertaxes),andPat'sspouse,Chris,earns$35,000

(aftertaxes).Theyhavetwopre-schoolchildren.Childcarefortheirchildrencosts

$12,000peryear.Pathasdecidedtostayhomeandtakecareofthechildren.Pat

must:

A.valuespendingtimewiththechildrenbymorethan$25,000.

B.valuespendingtimewiththechildrenbymorethan$12,000.

C.valuespendingtimewiththechildrenbymorethan$13,000.

D.valuespendingtimewiththechildrenasmuchasdoesChris.

Youpaid$35foraticket(whichisnon-refundable)toseeSPAM,alocalrock

band,inconcertonSaturday.(Assumethatyouwouldnothavebeenwillingto

payanymorethan$35forthisconcert.)Yourbosscalledandsheislookingfor

someonetocoverashiftonSaturdayatthesametimeastheconcert.Youwill

havetowork4hoursandshewillpayyoutimeandahalf,whichis$9/hr.

56.ShouldyougototheconcertinsteadofworkingSaturday?

A.Yes,yourbenefitismorethanyourcost.

B.No,yourbenefitislessthanyourcost.

C.Yes,yourbenefitisequaltoyourcost.

D.No,becausetherearenobenefitsintheconcert.

57.Whatistheopportunitycostofgoingtotheconcert?

A.$1、

B.$9

C.$35

D.$36

58.Whatisyouropportunitycost,ifyougotoworkonSaturday?

A.$0

B.$9

C.$35

D.$36

59.YoureconomicsurplusofgoingtoworkonSaturdayis:

A.$0

B.$l

C.$35

D.$36

Matthasdecidedtopurchasehistextbooksforthesemester.Hisoptionsareto

purchasethebooksviatheInternetwithnextdaydeliverytohishomeatacostof

$175,ortodrivetocampustomorrowtobuythebooksattheuniversitybookstore

atacostof$170.Lastweekhedrovetocampustobuyaconcertticketbecause

theyoffered25percentofftheregularpriceof$16.因?yàn)樗麄兲峁?5折的正常價(jià)

格16美元。

60.ThebenefittoMattofbuyinghisbooksatthebookstoreis____,

A.$5一’

B.$9

C.$170

D.$175

61.ThebenefittoMattwasfromdrivingtocampustobuytheconcertticket

lastweek.

A.$2

B.$4

C.$9

D.$16

62.Accordingtothecost-benefitprinciple:

A.itwouldnotberationalforMatttodrivetocampustopurchasethebooks

becausethe$5savingisonlytwopercentofthecostofthebooks,andthatis

muchlessthanthe25percenthesavedontheconcertticket.

B.itwouldberationalforMatttodrivetocampustopurchasethebooksbecause

itcostslesstobuythebookstherethanviatheInternet.

C.itwouldberationalforMatttodrivetocampustopurchasethebooksbecause

the$5savingismorethanhesavedbydrivingtheretobuytheconcertticket.

D.itwouldnotberationalforMatttodrivetocampustopurchasethebooks

becausethecostofgasandhistimemustcertainlybemorethanthe$5hewould

save.

63.AssumetheminimumthatMattwouldbewillingtoaccepttodrivetothe

universitycampusisequaltotheamounthesavedontheconcertticket.What

wouldbetheamountofhiseconomicsurplusifheboughthistextbooksatthe

universitybookstoreratherthanviatheInternet?

A.$5

B.$l

C.$50

D.$20

64.Themarginalbenefitofanactivityisthe:

A.sameasthetotalbenefitsoftheactivity.

B.totalbenefitdividedbytheleveloftheactivity.

C.extrabenefitassociatedwithanextraunitoftheactivity.

D.totalbenefitassociatedwithanextraunitoftheactivity.

65.Ifthemarginalcostsof1,2,and3hoursoftalkingonthephoneare$50,$75,

and$105respectively,thenthetotalcostsareof1,2and3hoursoftalkingonthe

phoneare:

A.$50,$150,and$315respectively.

B.$50,$41.67,and$115respectively.

C.$50,$125,and$230respectively.

D.$50,$175,and$405respectively.

66.Ifthetotalbenefitsofwatching1,2,and3baseballgamesonTVare100,120,

and125respectively,thenthemarginalbenefitsofwatching1,2and3baseball

gamesonTVare:

A.100,120,and125respectively.

B.100,20,and5respectively.

C.100,609,and41.67respectively.

D.100,240,and375respectively.

67.Theextrabenefitthatcomesfromanextraunitofactivityiscalledthe

oftheactivity.

A.marginalbenefit

B.marginalcost

C.averagebenefit

D.reservationbenefit

68.Themarginalcostofanactivityisthe:

A.changeinthecostoftheactivitythatresultsfromanextraunitoftheactivity.

B.sameasthetotalcostoftheactivity.

C.ratiooftotalcosttotheleveloftheactivity.

D.changeintheleveloftheactivitydividedbythechangeinthecostofthe

activity.

69.Theextracostthatresultsfromanextraunitofanactivityisthe:

A.marginalbenefit.

B.marginalcost.

C.reservationcost.

D.sameastheopportunitycost.

70.Dividingthetotalcostofnunitsofanactivitybynrevealsthe:

A.averagebenefit.

B.marginalcost.

C.unitspercost.

D.averagecost.

71.Youhadtopay$600(non-refundable)foryourmealplanfortheFallsemester,

whichgivesyouupto150meals.Ifyoueatallofthemeals,youraveragecostfor

amealequals:

A.$6.

B.$5.

C.$4.

D.$0.25.

72.Youhadtopay$600(non-refundable)foryourmealplanforFallsemester

whichgivesyouupto150meals.Ifyoueatonly100meals,youraveragecostfor

amealequals:

A.$6.

B.$5.

C.$4.

D.$0.25.

73.Youhadtopay$600(non-refundable)foryourmealplanforFallsemester,

whichgivesyouupto150meals.Ifyoueatonly100meals,yourmarginalcost

forthe100thmealis:

A.$6

B.$4

C.$0.25

D.$0

74.Theaveragebenefitofanactivityisthe:

A.totalbenefitoftheactivitydividedbythenumberofunits.

B.numberofunitsdividedbythetotalbenefitoftheactivity.

C.numberofunitstimesthetotalbenefitoftheactivity.

D.extrabenefitforoneadditionalunitoftheactivity.

75.Yousave$10ongaseveryweeksinceyouliveclosetothebusstop.Youhave

classfivedaysaweek.Whatisyouraveragebenefitperdayforlivingclosetothe

busstop?

A.$10

B.$5

C.$2

D.$1.43

76.Yourscholarshipdependsonyourmaintaininga3.5cumulativeGPA.Your

GPAforlastsemesterwas3.6,whichbroughtyourcumulativeGPAdown.What

mustbetrue?

A.Yourmarginalgrades(lastsemester'sgrades)werehigherthanyouroverall

GPA.

B.Yourmarginalgrades(lastsemester'sgrades)werelowerthanyouroverall

GPA.

C.Ifthissemester'sgradesarethesameaslastsemester's,youroverallGPAwill

staythesame.

D.Ifthissemester'sgradesarethesameaslastsemester's,youmightloseyour

scholarship.

UnitsofActivityTotalCostTotalBenefit

1$30$100

2$40$160

3$60$180

4$100$200

5$150$205

6$175$210

77.$R20efertothetableabove.Theaveragecostof4unitsofthisactivityis:

AB.$25

c$30

D$40

78.Refertothetableabove.Themarginalcostofthe3ldunitofthisactivityis:

A.$30

B.$25

C.$20

D.$10

79.Refertothetableabove.Theaveragebenefitof3unitsofactivityis:

A.$80

B.$60

C.$40

D.$20

80.Refertothetableabove.Themarginalbenefitofthe5thunitofactivityis:

A.$60

B.$50

C.$5

D.$0

81.Refertothetableabove.Accordingtothecost-benefitprinciple,thelevelof

activitythatprovidesthelargestnetbenefitis:

A.1

B.3

C.4

D.6

UnitsofActivityTotalCostTotalBenefit

1$3$10

2$4$14

3$6$16

4$10$20

5$15$24

6$21$28

7$28$29

82.Refertothetableabove.Theaveragecostof5unitsofactivityis:

A.$1'

B.$2

C.$3

D.$4

83.Refertothetableabove.Themarginalcostofthe4thunitofactivityis:

A.$1

B.$2

C.$3

D.$4

84.Refertothetableabove.Theaveragebenefitof4unitsofactivityis:

A.$4'

B.$5

C.$6

D.$10

85.Refertothetableabove.Themarginalbenefitofthe6thunitofactivityis:

A.$1-

B.$2

C.$4

D.$10

86.Refertothetableabove.Accordingtothecost-benefitprinciple,thelevelof

activitythatprovidesthelargestnetbenefitis:

A.1

B.4

C.5

D.7

FundraisersforWhatrsAMatterU

FundRaisingTotalAverageTotalLaborAverageLabor

EmployeesDonationsDonationsCostsCosts

1$30,000$8,000

2$42,426$17,000

3$17,321$27,000

4$60,000$9,500

5$13,416$50,000

87.Refertothetableabove.Thetotalvalueofdonationsraisedbythree

employeesis:二名雇員的善款的總價(jià)值是：

A.$43,899.

B.$45,000.

C.$48,911.

D.$51,963.

88.Refertothetableabove.T