A firm is financed $73\%$ by common stock, $9\%$ by preferred stock and $17\%$ by debt. The

required return is $18\%$ on the common, $11\%$ on the preferred, and $5\%$ on the debt. If the tax rate

is $21\%$ what is the WACC?

$($Note : I know, weights on equity$\%+$pref stock$\%+$debt$\%$ are not added up to $100\%,$ because Blackboard generates random numbers.$)$