alculating actual interest and weighted average interest rate weighted average accumulated expenditures are $480,000 on a project for which work steadily progressed during the current year. the following debt was outstanding during the current year. construction loan $120,000 at 10% note payable $600,000 at 8% mortgage payable $180,000 at 12% a. compute the total actual interest expense for the current year. $answer b. compute the weighted average interest rate on the general debt.