The real interest rate is;
Real interest rate = nominal interest rate - inflation
The rate at which prices increase over a specific time period is known as inflation. Inflation is often measured in broad terms, such as the general rise in prices or the rise in a nation's cost of living.
There are three main causes of inflation:
A real interest rate reflects the rate at which current things are preferred over future goods over time.
The difference between the nominal interest rate and the inflation rate is used to calculate the real interest rate for an investment.
Real interest rate = nominal interest rate - rate of inflation (expected or actual).
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