Macroeconomics Fourth Edition Solution Manual

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Solution1.In each of the following situations, identify which of the twelve principles is at work.a.You choose to shop at the local discount store rather than paying a higher pricefor the same merchandise at the local department store.b.On your spring break trip, your budget is limited to $35 a day.c.The student union provides a website on which departing students can sell itemssuch as used books, appliances, and furniture rather than giving them away totheir roommates as they formerly did.d.After a hurricane did extensive damage to homes on the island of St. Crispin,homeowners wanted to purchase many more building materials and hire manymore workers than were available on the island. As a result, prices for goods andservices rose dramatically across the board.e.You buy a used textbook from your roommate. Your roommate uses the money tobuy songs from iTunes.f.You decide how many cups of coffee to have when studying the night before anexam by considering how much more work you can do by having another cup ver-sus how jittery it will make you feel.g.There is limited lab space available to do the project required in Chemistry 101.The lab supervisor assigns lab time to each student based on when that student isable to come.h.You realize that you can graduate a semester early by forgoing a semester of studyabroad.i.At the student union, there is a bulletin board on which people advertise useditems for sale, such as bicycles. Once you have adjusted for differences in quality,all the bikes sell for about the same price.j.You are better at performing lab experiments, and your lab partner is better atwriting lab reports. So the two of you agree that you will do all the experiments,and she will write up all the reports.k.State governments mandate that it is illegal to drive without passing a driving exam.l.Your parents’ after- tax income has increased because of a tax cut passed byCongress. They therefore increase your allowance, which you spend on a springbreak vacation.1.a.People usually exploit opportunities to make themselves better off. In this case,you make yourself better off by buying merchandise at a lower price.b.Resources are scarce. Since you have only $35 a day, your resources are limited(scarce).c.Markets usually lead to efficiency. The market here is represented by the buyersand sellers who use the student union website to trade goods, in contrast to the“nonmarket” of simply giving items away to one’s roommate. The market is effi-cient because it enables people who want to sell items to find those who want tobuy those items. This is in contrast to a system in which items are simply left witha roommate, who may have little or no desire to have them.S-11CHAPTERFirst PrinciplesKrugWellsECPS4e_Micro_CH01.inddS-1KrugWellsECPS4e_Micro_CH01.inddS-19/23/149:35 AM9/23/149:35 AM

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