If Colleen Mooney invests $7,505.56 now and she will receive $18,900 at the end of 12 years, what annual rate of interest will Colleen earn on her investment? (Hint: Use Table 3.) (Round answer to 0 decimal places, e.g. 25%.)
(For calculation purposes, use 5 decimal places as displayed in the factor table provided.)
Annual rate of interest %