GHI Enterprises is planning to undertake a project requiring an initial outlay of Rs.6,00,000. The project will generate the following cash inflows:

Year	Cash Inflows (Rs.)
1	2,00,000
2	1,80,000
3	1,50,000
4	1,20,000
5	1,00,000

The depreciation rate is 20% on the original investment, and the company’s tax rate is 28%.

You need to:

1. Compute the Payback Period (PBP).
2. Calculate the Accounting Rate of Return (ARR).
3. Determine the Net Present Value (NPV) and Profitability Index (PI) at a cost of capital of 9%.
4. Calculate the Internal Rate of Return (IRR).