A firm has three bond issues outstanding as shown below. Based on this information what is the weighted average cost of debt? 
Definitions:
Throughput Time
The total time taken for a product to pass through a manufacturing process, from start to finish.
Factory Floor
The area where workers manufacture products or operate machinery, typically within a manufacturing plant or factory.
Warehouse
A storage facility for housing goods in large quantities, typically before they are distributed for sale.
Return On Investment
A performance measure used to evaluate the efficiency or profitability of an investment, calculated as net profit divided by the cost of the investment.
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