Interest rate problem












1












$begingroup$


I am supposed to solve this problem: mexican interest rate is 28%, interest rate in the US is 7% and exchange rate is 7.5 Mexican pesos for 1 US dollar. If interest rate parity applies and we don't take political risks into consideration, what interest rate do we expect a year from now? Will the mexican peso increase or decrease in value? How will change it value in percents?



My answer is: 1 US dollar = 2.24 Mexican pesos. Is it correct? Thanks










share|cite|improve this question









$endgroup$

















    1












    $begingroup$


    I am supposed to solve this problem: mexican interest rate is 28%, interest rate in the US is 7% and exchange rate is 7.5 Mexican pesos for 1 US dollar. If interest rate parity applies and we don't take political risks into consideration, what interest rate do we expect a year from now? Will the mexican peso increase or decrease in value? How will change it value in percents?



    My answer is: 1 US dollar = 2.24 Mexican pesos. Is it correct? Thanks










    share|cite|improve this question









    $endgroup$















      1












      1








      1





      $begingroup$


      I am supposed to solve this problem: mexican interest rate is 28%, interest rate in the US is 7% and exchange rate is 7.5 Mexican pesos for 1 US dollar. If interest rate parity applies and we don't take political risks into consideration, what interest rate do we expect a year from now? Will the mexican peso increase or decrease in value? How will change it value in percents?



      My answer is: 1 US dollar = 2.24 Mexican pesos. Is it correct? Thanks










      share|cite|improve this question









      $endgroup$




      I am supposed to solve this problem: mexican interest rate is 28%, interest rate in the US is 7% and exchange rate is 7.5 Mexican pesos for 1 US dollar. If interest rate parity applies and we don't take political risks into consideration, what interest rate do we expect a year from now? Will the mexican peso increase or decrease in value? How will change it value in percents?



      My answer is: 1 US dollar = 2.24 Mexican pesos. Is it correct? Thanks







      economics






      share|cite|improve this question













      share|cite|improve this question











      share|cite|improve this question




      share|cite|improve this question










      asked Dec 8 '18 at 22:14









      PeterPeter

      82




      82






















          1 Answer
          1






          active

          oldest

          votes


















          1












          $begingroup$

          All else being equal, it should not matter whether we collect interest in dollars or pesos. If I have one dollar today, I can have $1.07$ dollars in a year. If I convert the dollar to pesos, I get $7.5$ pesos today so I can have $7.5cdot 1.28=9.6$ pesos in a year. These should be of equal value, so in a year we expect the exchange rate to be $frac {9.6}{1.07}approx 8.97$ pesos to the dollar.



          There is nothing in the data given to indicate how interest rates will change. We have to assume they are stable to do this analysis.






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            Is this solution possible? E*(1+it^*-1+it+1) and with numbers 10/75*(1.28-1.07+1)?
            $endgroup$
            – Peter
            Dec 8 '18 at 23:50










          • $begingroup$
            That is not correct. The change is a factor $frac {1.28}{1.07}$, not the difference. When the percentages are small the error will be small. The ratio is $1.196$ while your calculation gets $1.19$.
            $endgroup$
            – Ross Millikan
            Dec 9 '18 at 0:47











          Your Answer





          StackExchange.ifUsing("editor", function () {
          return StackExchange.using("mathjaxEditing", function () {
          StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
          StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
          });
          });
          }, "mathjax-editing");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "69"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          noCode: true, onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3031707%2finterest-rate-problem%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1












          $begingroup$

          All else being equal, it should not matter whether we collect interest in dollars or pesos. If I have one dollar today, I can have $1.07$ dollars in a year. If I convert the dollar to pesos, I get $7.5$ pesos today so I can have $7.5cdot 1.28=9.6$ pesos in a year. These should be of equal value, so in a year we expect the exchange rate to be $frac {9.6}{1.07}approx 8.97$ pesos to the dollar.



          There is nothing in the data given to indicate how interest rates will change. We have to assume they are stable to do this analysis.






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            Is this solution possible? E*(1+it^*-1+it+1) and with numbers 10/75*(1.28-1.07+1)?
            $endgroup$
            – Peter
            Dec 8 '18 at 23:50










          • $begingroup$
            That is not correct. The change is a factor $frac {1.28}{1.07}$, not the difference. When the percentages are small the error will be small. The ratio is $1.196$ while your calculation gets $1.19$.
            $endgroup$
            – Ross Millikan
            Dec 9 '18 at 0:47
















          1












          $begingroup$

          All else being equal, it should not matter whether we collect interest in dollars or pesos. If I have one dollar today, I can have $1.07$ dollars in a year. If I convert the dollar to pesos, I get $7.5$ pesos today so I can have $7.5cdot 1.28=9.6$ pesos in a year. These should be of equal value, so in a year we expect the exchange rate to be $frac {9.6}{1.07}approx 8.97$ pesos to the dollar.



          There is nothing in the data given to indicate how interest rates will change. We have to assume they are stable to do this analysis.






          share|cite|improve this answer









          $endgroup$













          • $begingroup$
            Is this solution possible? E*(1+it^*-1+it+1) and with numbers 10/75*(1.28-1.07+1)?
            $endgroup$
            – Peter
            Dec 8 '18 at 23:50










          • $begingroup$
            That is not correct. The change is a factor $frac {1.28}{1.07}$, not the difference. When the percentages are small the error will be small. The ratio is $1.196$ while your calculation gets $1.19$.
            $endgroup$
            – Ross Millikan
            Dec 9 '18 at 0:47














          1












          1








          1





          $begingroup$

          All else being equal, it should not matter whether we collect interest in dollars or pesos. If I have one dollar today, I can have $1.07$ dollars in a year. If I convert the dollar to pesos, I get $7.5$ pesos today so I can have $7.5cdot 1.28=9.6$ pesos in a year. These should be of equal value, so in a year we expect the exchange rate to be $frac {9.6}{1.07}approx 8.97$ pesos to the dollar.



          There is nothing in the data given to indicate how interest rates will change. We have to assume they are stable to do this analysis.






          share|cite|improve this answer









          $endgroup$



          All else being equal, it should not matter whether we collect interest in dollars or pesos. If I have one dollar today, I can have $1.07$ dollars in a year. If I convert the dollar to pesos, I get $7.5$ pesos today so I can have $7.5cdot 1.28=9.6$ pesos in a year. These should be of equal value, so in a year we expect the exchange rate to be $frac {9.6}{1.07}approx 8.97$ pesos to the dollar.



          There is nothing in the data given to indicate how interest rates will change. We have to assume they are stable to do this analysis.







          share|cite|improve this answer












          share|cite|improve this answer



          share|cite|improve this answer










          answered Dec 8 '18 at 22:25









          Ross MillikanRoss Millikan

          296k23198371




          296k23198371












          • $begingroup$
            Is this solution possible? E*(1+it^*-1+it+1) and with numbers 10/75*(1.28-1.07+1)?
            $endgroup$
            – Peter
            Dec 8 '18 at 23:50










          • $begingroup$
            That is not correct. The change is a factor $frac {1.28}{1.07}$, not the difference. When the percentages are small the error will be small. The ratio is $1.196$ while your calculation gets $1.19$.
            $endgroup$
            – Ross Millikan
            Dec 9 '18 at 0:47


















          • $begingroup$
            Is this solution possible? E*(1+it^*-1+it+1) and with numbers 10/75*(1.28-1.07+1)?
            $endgroup$
            – Peter
            Dec 8 '18 at 23:50










          • $begingroup$
            That is not correct. The change is a factor $frac {1.28}{1.07}$, not the difference. When the percentages are small the error will be small. The ratio is $1.196$ while your calculation gets $1.19$.
            $endgroup$
            – Ross Millikan
            Dec 9 '18 at 0:47
















          $begingroup$
          Is this solution possible? E*(1+it^*-1+it+1) and with numbers 10/75*(1.28-1.07+1)?
          $endgroup$
          – Peter
          Dec 8 '18 at 23:50




          $begingroup$
          Is this solution possible? E*(1+it^*-1+it+1) and with numbers 10/75*(1.28-1.07+1)?
          $endgroup$
          – Peter
          Dec 8 '18 at 23:50












          $begingroup$
          That is not correct. The change is a factor $frac {1.28}{1.07}$, not the difference. When the percentages are small the error will be small. The ratio is $1.196$ while your calculation gets $1.19$.
          $endgroup$
          – Ross Millikan
          Dec 9 '18 at 0:47




          $begingroup$
          That is not correct. The change is a factor $frac {1.28}{1.07}$, not the difference. When the percentages are small the error will be small. The ratio is $1.196$ while your calculation gets $1.19$.
          $endgroup$
          – Ross Millikan
          Dec 9 '18 at 0:47


















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Mathematics Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          Use MathJax to format equations. MathJax reference.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fmath.stackexchange.com%2fquestions%2f3031707%2finterest-rate-problem%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Le Mesnil-Réaume

          Ida-Boy-Ed-Garten

          web3.py web3.isConnected() returns false always