Final answer:
The annual rate of interest on the loan is approximately 0.69%.
Step-by-step explanation:
To determine the annual rate of interest, we can use the formula:
Interest = Balance x Rate x Time
Given that the monthly payment included $412.50 as interest on a $60,000 loan balance, and assuming the loan is for one year, we can rearrange the formula to solve for the rate:
Rate = Interest / (Balance x Time)
Substituting the given values into the formula:
Rate = $412.50 / ($60,000 x 1) = 0.006875
Converting the rate to a percentage:
Rate = 0.006875 x 100% = 0.6875%
This means that the annual rate of interest on the loan is approximately 0.6875% or 0.69%.