VWX Corporation is planning to invest Rs.3,00,000 in a new project. The project is expected to last for 5 years with no residual value. The expected annual cash flows after depreciation but before tax are:

• Year 1: Rs. 90,000
• Year 2: Rs. 1,00,000
• Year 3: Rs. 80,000
• Year 4: Rs. 70,000
• Year 5: Rs. 60,000

The project will be depreciated at 20% annually, and the company's tax rate is 27%. Calculate the following:

1. Payback Period (PBP).
2. Accounting Rate of Return (ARR).
3. Net Present Value (NPV) and Profitability Index (PI) with a cost of capital of 10%.
4. Internal Rate of Return (IRR).