Interest rate problem












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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










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    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






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      asked Dec 8 '18 at 22:14









      PeterPeter

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          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









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          • $begingroup$
            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











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          1 Answer
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          1 Answer
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          active

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          active

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          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


















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