Answer:
83.14%
Step-by-step explanation:
Always keep in mind that market values are used when calculating weights for weighted average cost of capital (WACC):
Total equity market value = 10.8 x 28.8 = 311.04 mil
Total preferred equity market value = 2.8 x 16.3 = 45.64 mil
Total bond market value = 18.0 x 1,000 x 96.92 = 17.45 mil
Total firm value = 311.04 + 45.64 + 17.45 = 374.13 mil
Common equity weight = Total equity market value/Total firm value = 311.04/374.13 = 83.14%