Final answer:
The estimated net present value (NPV) of the proposed investment at an after-tax discount rate of 4% is approximately $1,800, which is option E.
Step-by-step explanation:
To calculate the estimated net present value (NPV) of the proposed investment at an after-tax discount rate of 4%, you need to discount each of the predicted after-tax cash inflows back to their present value (PV). Using the provided PV factors for 4%, the calculation is as follows:
- Year 1: $18,000 × 0.962 = $17,316
- Year 2: $15,000 × 0.925 = $13,875
- Year 3: $9,000 × 0.889 = $8,001
- Year 4: $6,000 × 0.855 = $5,130
- Year 5: $3,000 × 0.822 = $2,466
The sum of these values is the total present value of the inflows: $17,316 + $13,875 + $8,001 + $5,130 + $2,466 = $46,788.
Then, we must subtract the initial investment of $45,000 to find the NPV:
NPV = Total PV of inflows - Initial investment
NPV = $46,788 - $45,000 = $1,788
Since we need to round to the nearest hundred dollars, the NPV is approximately $1,800.
Therefore, the answer is E) $1,800.