Answer:
the weighted average cost of capital is 11.57 % .
Explanation:
Market Value of Equity = Number of Common Shares Outstanding × Market Price per share
                   = 30,000 shares × $15
                   = $450,000
Market Value of Debt = Face Value × 82%
                  = $280,000 × 82%
                  = $229,600
WACC = Ke × (E/V) + Kd × (E/V)
      = 14.00 % × ($450,000/ $679,600) + 6.80 %  × ($229,600/ $679,600)
      = 9.27 % + 2.30 %
      = 11.57 %