A logistics company is considering an investment of Rs. 350 lakhs in upgrading its fleet of trucks. The investment is expected to generate the following cash flows over the next five years:

Year	Cash Flow (Rs. in lakhs)
1	90
2	100
3	110
4	120
5	130

The cost of capital for the project is 10%, and the trucks will be depreciated on a straight-line basis over the project's life. The salvage value of the trucks at the end of five years is estimated to be Rs. 25 lakhs. Assume no income tax.

Requirements:

1. Calculate the net present value (NPV) of the project.
2. Determine the internal rate of return (IRR) of the project.
3. Compute the payback period.
4. Evaluate the profitability index of the project.
5. Advise whether the company should proceed with the investment based on the NPV and IRR.