What is the interest rate for paying off the loan of 720,000 yuan per month and 4,300 yuan in three minutes and 30 years?
After 30 years and 360 months, it is still 4300 yuan per month, still 4300 * 360 = 1.548 million yuan; So the total interest is 1548000-720000 = 828000. The converted annual interest rate is 3.83% {(82.8/30)/72} *100%.