成本会计管理的着重点 第十版 书后习题答案第二章.docx
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成本会计管理的着重点 第十版 书后习题答案第二章.docx
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成本会计管理的着重点第十版书后习题答案第二章
CHAPTER2
ANINTRODUCTIONTOCOSTTERMSANDPURPOSES
2-1Acostobjectisanythingforwhichaseparatemeasurementofcostsisdesired.Examplesincludeaproduct,aservice,aproject,acustomer,abrandcategory,anactivity,andadepartment.
2-2Costassignmentisageneraltermthatencompassestheassignmentofbothdirectcostsandindirectcoststoacostobject.Directcostsaretracedtoacostobjectwhileindirectcostsareallocatedtoacostobject.
∙Directcostsofacostobjectarerelatedtotheparticularcostobjectandcanbetracedtoitinaneconomicallyfeasible(cost-effective)way.
∙Indirectcostsofacostobjectarerelatedtotheparticularcostobjectbutcannotbetracedtoitinaneconomicallyfeasible(cost-effective)way.
2-3Managersbelievethatcoststhataretracedtoaparticularcostobjectaremoreaccuratelyassignedtothatcostobjectthanareallocatedcosts.Managersprefertousemoreaccuratecostsintheirdecisions.
2-4Factorsaffectingtheclassificationofacostasdirectorindirectinclude:
∙thematerialityofthecostinquestion,
∙availableinformation-gatheringtechnology,
∙designofoperations,and
∙contractualarrangements.
2-5Manufacturing-sectorcompaniespurchasematerialsandcomponentsandconvertthemintodifferentfinishedgoods.
Merchandising-sectorcompaniespurchaseandthenselltangibleproductswithoutchangingtheirbasicform.
Service-sectorcompaniesprovidesericesorintangibleproductstotheircustomersforexample,legaladviceoraudits.
2-6Acostdriverisafactor,suchasthelevelofactivityorvolume,thatcausallyaffectscosts(overagiventimespan).Achangeinthecostdriverresultsinachangeinthecostofthecostobject.Forexample,numberofvehiclesassembledisadriverofthecostsofsteeringwheelsonamotor-vehicleassemblyline.
2-7Avariablecostchangesintotalinproportiontochangesintherelatedleveloftotalactivityorvolume.Anexampleisasalescommissionthatisapercentageofeachsalesrevenuedollar.
Afixedcostremainsunchangedintotalforagiventimeperioddespitewidechangesintherelatedleveloftotalactivityorvolume.Anexampleistheleasingcostofamachinethatisunchangedforagiventimeperiod(suchasayear).
2-8Therelevantrangeisthebandofactivityorvolumeinwhichaspecificrelationshipbetweenthelevelofactivityorvolumeandthecostinquestionisvalid.Thisconceptenablestheuseoflinearcostfunctionswhenexaminingcost-volume-profit(CVP)relationshipsaslongasthevolumelevelsarewithinthatrelevantrange.
2-9Aunitcostiscomputedbydividingsomeamountoftotalcosts(thenumerator)bytherelatednumberofunits(thedenominator).Inmanycases,thenumeratorwillincludeafixedcostthatwillnotchangedespitechangesinthedenominator.Itiserroneousinthosecasestomultiplytheunitcostbyactivityorvolumechangetopredictchangesintotalcostsatdifferentactivityorvolumelevels.
2-10Manufacturingcompaniestypicallyhaveoneormoreofthefollowingthreetypesofinventory.
1.Directmaterialsinventory.Directmaterialsinstockandawaitinguseinthemanufacturingprocess.
2.Work-in-processinventory.Goodspartiallyworkedonbutnotyetfullycompleted.Alsocalledworkinprogress.
3.Finishedgoodsinventory.Goodsfullycompletedbutnotyetsold.
2-11Inventoriablecostsareallcostsofaproductthatareregardedasanassetwhentheyareincurredandthenbecomecostofgoodssoldwhentheproductissold.Thesecostsareincludedinwork-in-processandfinishedgoodsinventory(theyare"inventoried")tobuildupthecostsofcreatingtheseassets.
Periodcostsareallcostsintheincomestatementotherthancostofgoodssold.Thesecostsaretreatedasexpensesoftheperiodinwhichtheyareincurredbecausetheyarepresumednottobenefitfutureperiods(orbecausethereisnotsufficientevidencetoconcludethatsuchbenefitexists).Expensingthesecostsimmediatelybestmatchesexpensestorevenues.
2-12No.Servicesectorcompanieshavenoinventoriesand,hence,noinventoriablecosts.
2-13Directmaterialscostsaretheacquisitioncostsofallmaterialsthateventuallybecomepartofthecostobject("work-in-process"or"finishedgoods"),andthatcanbetracedtothecostobjectinaneconomicallyfeasibleway.
Directmanufacturinglaborcostsincludethecompensationofallmanufacturinglaborthatcanbetracedtothecostobjectinaneconomicallyfeasibleway.
Indirectmanufacturingcostsareallmanufacturingcoststhatareconsideredpartofthecostobject,unitsfinishedorinprocess,butthatcannotbetracedtothatcostobjectinaneconomicallyfeasibleway.
Primecostsarealldirectmanufacturingcosts.
Conversioncostsareallmanufacturingcostsotherthandirectmaterialcosts.
2-14Overtimepremiumconsistsofthewageratepaidtoallworkers(forbothdirectlaborandindirectlabor)inexcessoftheirstraight-timewagerates.
Idletimeisasubclassificationofindirectlaborthattypicallyrepresentswagespaidforunproductivetimecausedbylackoforders,machinebreakdowns,materialshortages,poorscheduling,andthelike.
2-15Aproductcostisthesumofthecostsassignedtoaproductforaspecificpurpose.Purposesforcomputingaproductcostinclude:
•Pricingandproductemphasisdecisions.
•Contractingwithgovernmentagencies.
•Preparingfinancialstatementsforexternalreportingundergenerallyacceptedaccountingprinciples.
2-16(10min.)Totalcostsandunitcosts.
1.Totalcost,$4,000.Unitcostperperson,$4,000÷500=$8.00
2.Totalcost,$4,000.Unitcostperperson,$4,000÷2,000=$2.00
3.Themainlessonofthisexerciseistoalertthestudentearlyinthecoursetothedesirabilityofthinkingintermsoftotalcostsratherthanunitcostswhereverfeasible.Changesinthedenominator(theleveloftotalactivityorvolumeinthiscaseattendance)willaffecttotalvariablecostsbutnottotalfixedcosts.Inourexample,itwouldbeperiloustouseeitherthe$8.00orthe$2.00unitcosttopredictthetotalcostbecausethetotalcostsarenotaffectedbytheattendance.Instead,thestudentassociationshouldusethe$4,000totalcost.Obviously,ifthemusicalgroupagreedtoworkfor,say,$4.00perperson,suchaunitvariablecostcouldbeusedtopredictthetotalcost.
2-17(15min.)Totalcostsandunitcosts.
1.(a)$100,0002,000=$50.00perpackage
(b)$100,0006,000=$16.67perpackage
(c)$100,00010,000=$10.00perpackage
(d)[$100,000+(10,000×$8)]20,000
=$180,00020,000=$9.00perpackage
TheunitcosttoECGdecreasesonaper-unitbaseduetothefirst$100,000paymentbeingafixedcost.The$8amountperpackagebeyond10,000unitsisavariablecost.Thecostfunctionis:
2-17(Cont’d.)
2.ECGshouldnotuseanyoftheunitcostsinrequirement1whenpredictingtotalcosts.Upto10,000units,thetotalcostisafixedamount.Beyond10,000units,thetotalcostisacombinationofafixedamountplusaper-unit(beyond10,000unit)variableamount.Thetotalcostsatdifferentvolumelevelscannotbepredictedbyusingtheunitcostataspecificvolumelevel.Thetotalcostshouldbepredictedbycombiningthetotalfixedcostsandtotalvariablecostsratherthanmultiplyingaunitcostamountbythepredictednumberofpackagessold.
2-18(15min.)Computingandinterpretingunitmanufacturing
costs.
1.
Supreme
Deluxe
Regular
Directmaterialscosts
$84.00
$54.00
$62.00
Directmanuf.laborcosts
14.00
28.00
8.00
Indirectmanuf.costs
42.00
84.00
24.00
Totalmanuf.costs
$140.00
$166.00
$94.00
Poundsproduced
80
120
100
Costperpound
$1.7500
$1.3833
$0.9400
2.Theunitcostsinrequirement1includes$20millionofindirectmanufacturingcoststhatarefixedirrespectiveofchangesinthevolumeofoutputpermonth,whiletheremainingvariableindirectmanufacturingcostschangewiththeproductionvolume.GiventheunitvolumechangesforAugust2001,theuseofunitcostsfromthepastmonthatadifferentunitvolumelevel(bothinaggregateandattheindividualproductlevel)willyieldincorrectestimatesoftotalcostsinAugust2001.
2-19(20min.)Directandindirectcosts,effectofchangingtheclassificationofacostitem
1.Directcostsarecoststhatarerelatedtotheparticularpaperproducts(Supreme,Deluxe,orRegular)andcanbetracedtoeachoneinaneconomicallyfeasible(cost-effective)way.
Indirectcostsarecoststhatarerelatedtotheparticularpaperproducts(Supreme,Deluxe,orRegular)butcannotbetracedtoeachoneinaneconomicallyfeasible(cost-effective)way.
2.Energycostsof$90millioncanbetracedtoeachindividualproductionline.Thistracingwillresultinamoreaccurateassignmentofcoststoproductsthanwhenthe$150millionofindirectmanufacturingcosts($20millionofwhichisfixed)isallocatedusingdirectmanufacturinglaborcostsateachline.The$90millionofenergycostsdonothaveanidenticalrelationshiptodirectmanufacturinglaborcostsforeachproductlineasisassumedwhenthedirectmanufacturinglaborcostallocationbaseisusedinQuestion2-18:
Supreme
Deluxe
Regular
Total
1.Directenergycosts
$39.800
$40.700
$9.500
$90.000
2.Directmanuf.laborcost
14.000
28.000
8.000
50.000
3.Ratioof1to2.
2.843
1.454
1.187
1.800
TheSupremeproductlinehasthemostenergyintensiveusagevis-à-visitsdirectmanufacturinglaborcostcontent.TheresultisthatthesupremeproductlinewillbeundercostedwhentheExercise2-18unitcostnumbersareused.
3.
Supre
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