
Answer:
The weighted-average interest rate used for interest capitalization purposes is 10.1%
Explanation:
This problem requires us to compute the weighted-average interest rate used for interest capitalization purposes. The wacc can be calculated in the following way.
     Loan Amount Outstanding                   Weightage                      (LOA)                                     (LAO/Total)
           $ 868,933    (1,042,720/12*10)         13.6%  Â
           $ 2,039,800                         32%
           $ 3,462,500                         54.4%
Total        $ 6,371,233
WAAC = 13% * 13.6% + 9% * 32% + 10% * 54.4%
WAAC = 10.1%