Suppose a firm is considering a project with the following net benefit stream: 

Year                                       0          1            2               3               4           5 

Net Benefit (Market)            -700      200        200         200        200       200 

To undertake this project, the firm will open an overdraft account worth 50% of the initial cost in year 0. 

Calculate: 

a) The interest payments on the overdraft

b) The stream net private benefits after interest

c) The net present value of the private benefit.