Answer:
10.34%
Explanation:
Calculation to determine what will Nantucket's new WACC be
New Firm Value= $640,000 + (.34) ($300,000)
New Firm Value= $742,000
Capital Structure = $300,000 + $442,000
($742,000-$300,000=$442,000)
rs = .12 + (300/442) * (.12 - .08) * (1 - .34)
rs= .12 + .0179
rs = .1379*100
rs = 13.79%
Now let calculate the New WACC
New WACC = (300/742) * (.08) * (1 - .34) + (442/742) * (.1379)
New WACC= .0213 + .0821
New WACC= .1034*100
New WACC= 10.34%
Therefore what will Nantucket's new WACC be is 10.34%