A manufacturing firm is considering the following project:

• Initial investment: Rs. 600 lakhs
• Earnings (before depreciation and taxes) for five years: Rs. 180 lakhs, 190 lakhs, 200 lakhs, 210 lakhs, and 220 lakhs
• Depreciation: 10% on a Written Down Value basis
• Scrap value at the end of five years: 30%
• Cost of raising capital: 9%
• Income tax rate: 30%

Requirements:

1. Calculate the NPV.
2. Calculate the IRR.
3. Calculate the payback period.
4. Determine the profitability index.

Calculate the accounting rate of return.