《西方经济学》双语课件PPTch09-International Trade.ppt

9PRINCIPLESOFFOURTHEDITIONApplication:InternationalTrade0Inthischapter,lookfortheanswerstothesequestions:Whatdetermineshowmuchofagoodacountrywillimportorexport?Whobenefitsfromtrade?Whodoestradeharm?Dothegainsoutweighthelosses?Ifpolicymakersrestrictimports,whobenefits?Whoisharmed?Dothegainsofthepolicyoutweighthelosses?monargumentsforrestrictingtrade?Dotheyhavemerit?0APPLICATION:INTERNATIONALTRADEIntroductionRecallfromChapter3:parativeadvantageinagoodifitproducesthegoodatloweropportunitycostthanothercountries. efromand:parativeAdvantagePW=theworldpriceofagood,thepricethatprevailsinworldmarketsPD=domesticpricewithouttradeIfPD<PW,parativeadvantageinthegoodunderfreetrade,countryexportsthegoodIfPD>PW,parativeadvantageunderfreetrade,countryimportsthegood0APPLICATION:INTERNATIONALTRADETheSmallEconomyAssumptionAsmalleconomyisapricetakerinworldmarkets:–.–,PWistheonlyrelevantprice:eptlessthanPW,because,because:INTERNATIONALTRADEACountryThatExportsSoybeansWithouttrade,PD=$4Q=500PW=$6Underfreetrade,domesticconsumersdemand300domesticproducerssupply750exports=450PQDS$6$4500300Soybeansexports7500APPLICATION:INTERNATIONALTRADEACountryThatExportsSoybeansWithouttrade,CS=A+BPS=CTotalsurplus=A+B+CWithtrade,CS=APS=B+C+DTotalsurplus=A+B+C+DPQDS$6$4SoybeansexportsABDCgainsfromtrade0APPLICATION:INTERNATIONALTRADEACTIVELEARNING1:AnalysisoftradeWithouttrade,PD=$3000,Q=400Inworldmarkets,PW=$1500Underfreetrade,howmanyTVswillthecountryimportorexport?IdentifyCS,PS,andtotalsurpluswithouttrade,andwithtrade.*PQDS$1500200$3000400600PlasmaTVs0APPLICATION:INTERNATIONALTRADEACTIVELEARNING1:Answers*Underfreetrade,domesticconsumersdemand600domesticpro