A company has to make a choice between two projects namely A & B. The initial capital outlay of two projects are $365,000 and $568,000 respectively for A and B. There will be no scrap value at the end of the life of both the projects. The opportunity cost of capital of the company is 16%. The annual income are as under:
Year Project A Project B

1 15000 8500

2 23000    11100

3 27500    15200

4 19600    14700

5 18400 22500

6 23400    28100

7    35200 39200

8 38100    50400

9 39000    82400

10    45150 79200

11 46800    98640

12 48630    110800

13    52180    61400

14    50280 70560

15 61890 52400

There will be additional cash outflow of $23,000 and $31,000 at the end of 8 year for project A and B respectively.
Analyze which project is better for the company using following approaches:
1. Net present value 2. Payback period 3. Discounted payback period 4. Profitability index