Answer: 7.67%
Step-by-step explanation:
To solve this, the financial calculator will be needed
Present value = -896.87
Future Value = 1,000
N = [(25 - 5years) × 2 = 40
PMT = $45
Given the above information, we will press the financial calculator as we'll press CPT after which we then press I/Y and we'll get 5.11%
Then, the the firm's after-tax cost of debt will be:
= (5.11% x 2 )(1 - 0.25)
= (0.0511 × 2) (0.75)
= 0.07665
= 7.665%
= 7.67%