经济学原理 曼昆课后答案 chapter 7

问题和应用程序1.ifinanearlyfreezeincaliforniasoursthelemoncrop， thesupsurceverforlemonsshiftstotheleft asshowinnfigure7-5. therelectisariseintheprecifyoflemonsandadeclineinmconsumersurplusfromoFigure 7-5战斗机mendethemarksforlemonade， thehighrecostoflemonsredesthesupplicationoflemonade asshowinnfigure7-6. therelesisariseinthepriceoflemonandadeclineinconsumersure SSO fef.notethataneventthataffectsconsumersurplusinonemarketoftheshaserconsurcurplusinothermarkets .Figure 7-6战斗机2.ariseinthedemandfordfrenchbreadleadstoanincreaseinproducersurplusinthemarketfrenchbread figure7-7. heshiftofthedemandcurveleadFigure 7-7战斗机22222222222222222222222222222222222226 increcinisingproducersurplusfromareadtodef.notethataffectsproducersurplusinonemarketleadstoefffFigure 7-8战斗机3.a.Bertsdemandscheduleis :普莱斯Quantity DemandedMore than $70$5 to $71$3 to $52$1 to $33$1 or less4Bertsdemandcurveisshowinnfigure7- 9。Figure 7-9战斗机b.whenthepriceofabottleofwateris $4bertbuystwobottlesofwater.hisconsumersurplusisshownasareaainthefigure.heveleshistobottleofware rit，sorshasconsurcesurplusof $3. heversionsssionbottleofwaterat $ 5，but pays only $4for it sohasconsumersurplusof $1. thus Bertstotalconsonc.whenthepriceofabottleofwaterfallsfrom $ 4to $ 2， bertbuysthrottleofwater anincreaseofone.hisconsumersurplusconsistsofbothareasandbinthefigure anincreaseintheamountofareab.hegets romthefirstbottle ($7value $2price )中的$3fromthesecondbottle ($5value $2price )， 带有and $1fromthethirdbottle ($3value $2price )的foratotalconsumersurplusof $9. thusconsumersurplusrisesby $5(whichisthesizeofareab ) whene4.a.Erniessupplicationscheduleforwateris :普莱斯Quantity SuppliedMore than $74$5 to $73$3 to $52$1 to $31Less than $10厄尼ssupplychainfigure7- 10。Figure 7-10战斗机b.whenthepriceofabottleofwateris $ 4安妮销售人员twobottlesofwater.hisproduccersurplusisshownasareaainthefigure.he receives $4forhisfire costsonly$1toproduce，soerniehasproducersurplusof $3. healsoreceives $4forhissecondbottleofwater， which costs $3to produce sohehasproducersurplusof $1. thus Erniestotalpproducersurplusis $3$1=$ 4，which is the area of A in the figure。c.whenthepriceofabottleofwaterrisesfrom $ 4to $ 6， erniesellsthrottleofwater anincreaseofone.hisproducersurplusconsistsofbottleareasandbinthefigure anincreasebytheamountofareab.hh f $5fromthefirstbottle ($6price $1cost ) $3fromthesecondbottle ($6price为$3cost )， and $1fromthethirdbottle ($6price为$5price，foratotalproducersurplusof $9. thusproducersurplusrisesby $5(whichisisthesizeofareab ) web )5.a .来自Erniessupplyscheduleandbertsdemandschedule，thequantitydemandedandsuppledare :普莱斯Quantity SuppliedQuantity Demanded$ 213422631onlyapriceof $4bringssupplyanddemandintoequilibrium，with an equilibrium quantity of 2。b.At a price of $4、consumersurplusis $ 4和andproducersurplusis $ 4、asshowinnproblems 3和4.totalsurplusis $4=$ 8c.ifernieproducedonefewerbottle，hisproducersurpluscouldlineto $ 3，asshowinproblem4. ifbertconsumedonefewerbottle hisconsumersurplusd.ifernieprodudoneadditionalbottleofwater，hiscostou$5，but the price is only $4价值3美元但价格4美元的sohisconsumersurplusdeclineby $6.a.theeferectoffallingproductionsinthemateforstereosresultsinasstotheritinthesupplycurve as shown in figure7- 11.as a result， theequirelicriverpricesofstereosdeclines，thequirelicriverquantityincases。b.thedeclineinthepriceofstereosincasesconsumersurplusfromareatoabcd anincrementaseintheamountbb.priortotheshiftinsupply产品theareabovethesupplychaincurvebelowtherprice ) . aftertheshiftinsupply producersurplusisareasgg.soproducersurpluschangesbytheamountagg-b whichimaybepositiveornegative.theincrear ducersurplus chelethedeclineinthepriceredcesproducersurplus.sinceconsumersurplusrisesbybcdandproducersurplusrisesbyfg-b，总计c.ifthesurceosstothesurceosstot