Sam loaned $12,000 to his brother to make a down payment on a new home. Four years later, he paid her back the $12,000 along with an interest of $2000. If the interest that was collected was simple interest, what was the annual interest rate? Round answer to two decimal places. Sam loaned $12,000 to his brother to make a down payment on a new home. Four years later, he paid her back the $12,000 along with an interest of $2000. If the interest that was collected was simple interest, what was the annual interest rate? Round answer to two decimal places. Sam loaned $12,000 to his brother to make a down payment on a new home. Four years later, he paid her back the $12,000 along with an interest of $2000. If the interest that was collected was simple interest, what was the annual interest rate? Round answer to two decimal places. Sam loaned $12,000 to his brother to make a down payment on a new home. Four years later, he paid her back the $12,000 along with an interest of $2000. If the interest that was collected was simple interest, what was the annual interest rate? Round answer to two decimal places.