This order is from the greatest interest to the least interest multiplied to its given amount of years.
1st Loan of $2,000 at 12% rate for 9 years is equivalent to $2160.00
2nd Loan of $2,500 at 5% rate for 9 years is equivalent to $1125.00
3rd Loan of $2,500 at 12% rate for 3 years is equivalent to $900.00
It is as it shows that the amount matters from the rate and the years.