Principles of Economics 9th Edition Solution Manual | Complete Solutions Guide (Latest PDF)

ChapterJ1/TenJPrinciplesJofJEconomicsJ ❖J 1




1
Principles of Economics 9E -Mankiw –
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SOLUTION MANUAL BEST EDITION
J J J J




WHAT’SJNEWJINJTHEJNINETHJEDITION:


ThereJareJnoJmajorJchangesJtoJthisJchapter.



LEARNINGJOBJECTIVES:

ByJtheJendJofJthisJchapter,JstudentsJshouldJunderstand:



➢ thatJeconomicsJisJaboutJtheJallocationJofJscarceJresources.


➢ thatJindividualsJfaceJtrade-offs.

➢ theJmeaningJofJopportunityJcost.


➢ howJtoJuseJmarginalJreasoningJwhenJmakingJdecisions.


➢ howJincentivesJaffectJpeople’sJbehavior.

©J2018JCengageJLearning®.JAllJRightsJReserved.JMayJnotJbeJscanned,JcopiedJorJduplicated,JorJpostedJtoJaJpubliclyJaccessibleJwebsite,JinJwholeJorJinJpa
rt,J exceptJforJuseJasJpermittedJinJaJlicenseJdistributedJwithJaJcertainJproductJorJserviceJorJotherwiseJonJaJpassword-protectedJwebsiteJorJschool-
approvedJlearningJmanagementJsystemJforJclassroomJuse.

, ChapterJ1/TenJPrinciplesJofJEconomicsJ ❖J 2




➢ whyJtradeJamongJpeopleJorJnationsJcanJbeJgoodJforJeveryone.


➢ whyJmarketsJareJaJgood,JbutJnotJperfect,JwayJtoJallocateJresources.


➢ whatJdeterminesJsomeJtrendsJinJtheJoverallJeconomy.




CONTEXTJANDJPURPOSE:


ChapterJ1JisJtheJfirstJchapterJinJaJthree-
chapterJsectionJthatJservesJasJtheJintroductionJtoJtheJtext.JChapterJ1JintroducesJtenJfundamentalJprinciple
sJonJwhichJtheJstudyJofJeconomicsJisJbased.JInJaJbroadJsense,JtheJrestJofJtheJtextJisJanJelaborationJonJthe
seJtenJprinciples.JChapterJ2JwillJdevelopJhowJeconomistsJapproachJproblemsJwhileJChapterJ3JwillJexplainJ
howJindividualsJandJcountriesJgainJfromJtrade.
TheJpurposeJofJChapterJ1JisJtoJlayJoutJtenJeconomicJprinciplesJthatJwillJserveJasJbuildingJblocksJforJth
eJrestJofJtheJtext.JTheJtenJprinciplesJcanJbeJgroupedJintoJthreeJcategories:JhowJpeopleJmakeJdecisions,Jho
wJpeopleJinteract,JandJhowJtheJeconomyJworksJasJaJwhole.JThroughoutJtheJtext,JreferencesJwillJbeJmade
JrepeatedlyJtoJtheseJtenJprinciples.




©J2018JCengageJLearning®.JAllJRightsJReserved.JMayJnotJbeJscanned,JcopiedJorJduplicated,JorJpostedJtoJaJpubliclyJaccessibleJwebsite,JinJwholeJorJinJpa
rt,J exceptJforJuseJasJpermittedJinJaJlicenseJdistributedJwithJaJcertainJproductJorJserviceJorJotherwiseJonJaJpassword-protectedJwebsiteJorJschool-
approvedJlearningJmanagementJsystemJforJclassroomJuse.

, ChapterJ1/TenJPrinciplesJofJEconomicsJ ❖J 3


KEYJPOINTS:


• TheJfundamentalJlessonsJaboutJindividualJdecisionJmakingJareJthatJpeopleJfaceJtrade-
offsJamongJalternativeJgoals,JthatJtheJcostJofJanyJactionJisJmeasuredJinJtermsJofJforgoneJo
pportunities,JthatJrationalJpeopleJmakeJdecisionsJbyJcomparingJmarginalJcostsJand
marginalJbenefits,JandJthatJpeopleJchangeJtheirJbehaviorJinJresponseJtoJtheJincentivesJtheyJf
ace.


• TheJfundamentalJlessonsJaboutJinteractionsJamongJpeopleJareJthatJtradeJand
interdependenceJcanJbeJmutuallyJbeneficial,JthatJmarketsJareJusuallyJaJgoodJwayJofJcoordina
tingJeconomicJactivityJamongJpeople,JandJthatJtheJgovernmentJcanJpotentiallyJimproveJmark
etJoutcomesJbyJremedyingJaJmarketJfailureJorJbyJpromotingJgreaterJeconomicJequality.


• TheJfundamentalJlessonsJaboutJtheJeconomyJasJaJwholeJareJthatJproductivityJisJtheJultimateJs
ourceJofJimprovingJlivingJstandards,JthatJgrowthJinJtheJquantityJofJmoneyJisJtheJultimateJsour
ceJofJinflation,JandJthatJsocietyJfacesJaJshort-runJtrade-offJbetweenJinflationJand
unemployment.


CHAPTERJOUTLINE:

I. Introduction

BeginJbyJpointingJoutJthatJeconomicsJisJaJsubjectJthatJstudentsJmustJconfrontJi
nJtheirJdailyJlives.JPointJoutJthatJtheyJalreadyJspendJaJgreatJdealJofJtheirJtimeJt
hinkingJaboutJeconomicJissues:JchangesJinJprices,JbuyingJdecisions,JuseJof



A. TheJwordJ“economy”JcomesJfromJtheJGreekJwordJoikonomosJmeaningJ“oneJwhoJmanagesJaJ
household.”


B. BothJhouseholdsJandJeconomiesJfaceJmanyJdecisionsJaboutJhowJtoJallocateJresources.

C. ResourcesJareJscarceJsoJtheyJmustJbeJmanagedJcarefully.

YouJwillJwantJtoJstartJtheJsemesterJbyJexplainingJtoJstudentsJthatJpartJofJlear
ningJeconomicsJisJunderstandingJaJnewJvocabulary.JEconomistsJgenerallyJuseJ
veryJLearning®.
©J2018JCengage Jprecise JAllJJ(and sometimes
RightsJJReserved. JMayJnotJJdifferent) Jdefinitions
beJscanned,Jcopied JorJduplicated,JJfor Jwords
orJposted JthatJJaccessible
JtoJaJpublicly are Jwebsite,JinJw orJinJpart,
holeJexceptJforJuseJasJpermittedJinJaJlicenseJdistributedJwithJaJcertainJproductJorJserviceJorJotherwiseJonJaJpassword- JedJlearni
commonly
protectedJwebsite JusedJoutsideJofJtheJeconomicsJdiscipline.JTherefore,JitJwillJbe
JorJschool-approv ng
managementJsystemJforJclassroomJuse.

, ChapterJ1/TenJPrinciplesJofJEconomicsJ ❖J 4




D. DefinitionJofJscarcity:JtheJlimitedJnatureJofJsociety’sJresources.

E. DefinitionJofJeconomics:JtheJstudyJofJhowJsocietyJmanagesJitsJscarceJresources.




BecauseJmostJcollegeJfreshmenJandJsophomoresJhaveJlimitedJexperiencesJwit
hJviewingJtheJworldJfromJaJcause-and-effectJperspective,JdoJnot




AsJyouJdiscussJtheJtenJprinciples,JmakeJsureJthatJstudentsJrealizeJthatJitJis
okayJifJtheyJdoJnotJgraspJeachJofJtheJconceptsJcompletelyJorJfindJeachJofJthe
II.J HowJPeopleJMakeJDecisions


A. PrincipleJ#1:JPeopleJFaceJTrade-offs


1. “ThereJain’tJnoJsuchJthingJasJaJfreeJlunch.”JToJgetJsomethingJthatJweJlike,JweJusuallyJhaveJtoJ
giveJup,JorJtradeJfor,JsomethingJelseJthatJweJalsoJlike.


2. ExamplesJincludeJhowJstudentsJspendJtheirJtime,JhowJaJfamilyJdecidesJtoJspendJitsJincome,J
howJtheJU.S.JgovernmentJspendsJtaxJdollars,JandJhowJregulationsJmayJprotectJtheJenviron
mentJatJaJcostJtoJfirmJowners.

3. AnJimportantJtrade-offJthatJsocietyJfacesJisJtheJtrade-offJbetweenJefficiencyJandJequality.


a. DefinitionJofJefficiency:JtheJpropertyJofJsocietyJgettingJtheJmostJitJcanJfromJit
sJscarceJresources.


b. DefinitionJofJequality:JtheJpropertyJofJdistributingJeconomicJprosperit
yJuniformlyJamongJtheJmembersJofJsociety.

c. ForJexample,JtaxJdollarsJpaidJbyJwealthyJAmericansJandJthenJdistributedJtoJthoseJlessJf
ortunateJmayJimproveJequalityJbutJlowerJtheJreturnJtoJhardJworkJandJthereforeJreduceJt
heJlevelJofJoutputJproducedJbyJourJresources.

©J2018JCengageJLearning®.JAllJRightsJReserved.JMayJnotJbeJscanned,JcopiedJorJduplicated,JorJpostedJtoJaJpubliclyJaccessibleJwebsite,JinJwholeJorJinJpa
rt,J exceptJforJuseJasJpermittedJinJaJlicenseJdistributedJwithJaJcertainJproductJorJserviceJorJotherwiseJonJaJpassword-protectedJwebsiteJorJschool-
approvedJlearningJmanagementJsystemJforJclassroomJuse.