Answer:
10.70%
Step-by-step explanation:
NPER = 12*2 = 24
PMT = 40
PV = -820
FV = 1000
Pretax Cost of Debt = Rate (NPER, PMT, -PV, FV) * 2
Pretax Cost of Debt = Rate(24, 40, -820, 1000) * 2
Pretax Cost of Debt = 0.0535 * 2
Pretax Cost of Debt = 5.35% * 2
Pretax Cost of Debt = 10.70%