A $30,000 loan bearing interest at 9% compounded monthly was repaid, after a period of deferral, by monthly payments of $425.10 for 10 years. What was the time interval between the date of the loan and the first payment?

Compounded monthly

A method where interest is calculated on the principal and any accumulated interest each month, effectively increasing the amount on which future interest is earned.

Deferral period

A span of time during which payments, obligations, or other actions are postponed or delayed.