Inflation affects creditors and debtors. Suppose the Canadian debtors borrowed $100 from the Canadian creditors on December 31, 1992 and promised to pay back $105 on December 31, 1993. This is equivalent to paying back a nominal interest rate of 5%
CPI For 1991: 95.12, CPI 1992: 100, CPI 1993:.117.79
Find the real interest rate, which is defined as real interest rate = nominal interest rate - inflation rate.