Whispering Company is constructing a building. Construction began on February 1 and was completed on December 31 . Expenditures were $1,920,000 on March 1, $1,200,000 on June 1, and $3,058,670 on December 31 . Whispering Company borrowed $1,018,620 on March 1 on a 5 -year, 12% note to help finance construction of the building. In addition, the company had outstanding all year a 10%,5-year, $2,005,300 note payable and an 11%,4-year, $3,444,000 note payable. Compute the weighted-average interest rate used for interest capitalization purposes. (Round answer to 2 decimal places, es. 7.58\%) Weighted-average interest rate %