,If an investor borrows $100 and pays back $100 after a year to settle his loan, it implies that the rate of interest is 0%
This refers to the added amount which is to be repaid with respect to a loan after a given time period.
With this in mind, we can see that because after a period of 1 year, the principal amount which is $100 is paid back without any additional charge, then the rate of interest on the loan is 0%.
Read more about interest rate here:
https://brainly.com/question/25793394