Answer:
a.
6.24%
b.
9.11%
Step-by-step explanation:
a.
P = [ C x ( 1 - ( 1 + r )^-n ) / r ] + [ F / ( 1 + r )^n ]
Where
F = Face value = $1,000
P = Price = Price x ( 1 - Floatation cost rate ) = $1,100 x ( 1 - 4% ) = $1,056
C = Coupon payment = Face value x Coupon rate x semiannual fraction = $1,000 x 7% x 6/12 = $35
n = numbers of periods = Numbers of years to maturity x coupon payment per year = 10 years x 2 periods per year = 20 periods
r = YTM x 6/12 = r/2
Placing values in the formula
$1,056 = [ $35 x ( 1 - ( 1 + r/2 )^-20 ) / r/2 ] + [ $1,000 / ( 1 + r/2 )^20 ]
r = 3.1194% x 2 = 6.23885% = 6.24%
b.
Now use the following formula to calculate WACC
WACC = ( Cost of Equity x Wight of equity ) + ( After tax Cost of debt x Weight of debt )
WACC = ( 12% x 65% ) + ( 6.24% x ( 1 - 40% ) x 35% )
WACC = 7.80% + 1.31%
WACC = 9.11%