A retail chain is considering an investment of Rs. 6,00,000 in a new store. The store has a useful life of 10 years and no salvage value. It is expected to generate annual net operating income after depreciation of Rs. 80,000. The company's tax rate is 28%. The present value factors for 10 years are given below:

Present Value Factors:

Discounting Rate	Cumulative Factor
8%	6.71
10%	6.14
12%	5.65
14%	5.22
16%	4.79

Requirements:

1. Calculate the annual net cash inflow after tax.
2. Compute the present value of the cash inflows at each discount rate.
3. Calculate the NPV at each discount rate.
4. Find the IRR of the investment.
5. Evaluate if the store should be opened if the required rate of return is 12%.