Sage Company is constructing a building. Construction began on February 1 and was completed on December 31 . Expenditures were $1,824,000 on March 1, $1,224,000 on June 1, and $3,030,540 on December 31. Sage Company borrowed $1,082,950 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 9%,5-year, $2,046,800 note payable and an 10%,4-year, \$3,555,500 note payable. Compute the weighted-average interest rate used for interest capitalization purposes. (Round answer to 2 decimal places, e.g. 7.58\%.) Weighted-average interest rate %