GHI Inc. is evaluating a new project with an initial investment of Rs. 900 lakhs. The projected earnings before depreciation and taxes over the next six years are:

Year	Earnings (Rs. in lakhs)
1	300
2	320
3	340
4	360
5	380
6	400

The project will depreciate at 15% per annum using the Written Down Value method. The company's cost of capital is 10%, and the tax rate is 30%. The scrap value at the end of the project is Rs. 50 lakhs.

Requirements:

1. Calculate the annual depreciation using the Written Down Value method.
2. Determine the taxable income for each year.
3. Compute the after-tax earnings.
4. Calculate the annual cash flows.
5. Determine the project's NPV and IRR.