Assume a not-for-profit company has $10 million of long-term tax-exempt debt wit

Assume a not-for-profit company has $10 million of long-term tax-exempt debt with an
interest rate of 4.5%. The organization has $7 million of net assets without donor
restrictions, with an estimated cost of capital of 6%, and $4 million of net assets with
donor restrictions (in an endowment), with an estimated 7% return on assets (cost of
capital). What is its weighted average cost of capital?

Hint: Must calculate total capital and total cost