WACC. Grey's Pharmaceuticals has a new project that will require funding of $$13\mathrm{.}4$ million. The company has decided to pursue an all$-$debt scenario. Grey's has made agreements

with four lenders for the needed financing. These lenders will advance the following amounts at the interest rates shown:

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What is the weighted average cost of capital for the $$13,400,000?$

$\%($Round to two decimal places.$)$