Sandra Robinson made an investment of $9,827.52. From this investment, she will receive $1,600 annually for the next 15 years starting one year from now. Click here to view the factor table. (For calculation purposes, use 5 decimal places as displayed in the factor table provided.) What rate of interest will Sandras investment be earning for her? (Hint: Use Table 4.) (Round answer to 0 decimal places, e.g. 25%.)

Rate of interest