Final answer:
The actual real rate on the loan in Case 1 is 1%. The borrower gains and the bank incurs a loss. The actual real rate on the loan in Case 2 is 4%. The bank gains and the borrower incurs a loss.
Step-by-step explanation:
The actual real rate on the loan in case 1 can be calculated as:
Actual real rate = Nominal rate - Actual inflation rate
Actual real rate = 5% - 4% = 1%
In this case, the actual real rate on the loan is 1%.
In terms of gain and loss, the borrower gains because the actual real rate on the loan is lower than expected, while the bank incurs a loss because the actual real rate on the loan is lower than the agreed upon nominal rate.
In case 2, the actual real rate on the loan can be calculated as:
Actual real rate = Nominal rate - Actual inflation rate
Actual real rate = 5% - 1% = 4%
In this case, the actual real rate on the loan is 4%.
In terms of gain and loss, the bank gains because the actual real rate on the loan is higher than expected, while the borrower incurs a loss because the actual real rate on the loan is higher than the agreed upon nominal rate.