In: Finance
(a): In this case you have already invested money into the project and hence the amount of your investment will be treated as a sunk cost. This is because this cost has already been incurred and cannot be recovered. As per capital budgeting norms this investment amount is now irrelevant when making the decision to continue with a project or not.
In this case you will compute the NPV of the project only by taking into consideration the relevant cash flows i.e. revenues and relevant costs. If the NPV is negative when relevant cash flows are considered then you should not go ahead with the project. On the other hand if the NPV is positive when relevant cash flows are considered then you should go ahead with the project.
(b): Here the investment of $400,000 has not been made and so this will not be a sunk cost but will be a relevant cost. Here we will compute the project’s NPV.
Present value of revenues = 125,000/1.1 + 125,000/1.1^2 + 125,000/1.1^3 + 125,000/1.1^4 + 125,000/1.1^5
= $473,848.35
Present value of expenses = -400,000 – 20,000/1.1 – 20,000/1.1^2
= -$434,710.74
NPV = present value of revenues + present value of expenses
= $473,848.35 -$434,710.74
= $39,137.60
As NPV is positive the project should be accepted.