A firm faces a decision about replacement of a machine.

Following is the information available:

1. Depreciation of existing machine is Rs. 25000/- p.a.

2. A new machine is available at Rs. 45000/- that is much more efficient in production.

3. Increase in power cost due to the new machine is Rs. 5000/- p.a.

4. Rent of the factory building is Rs. 60000/- p.a.

5. Scrap Value of the old machine is Rs. 4000/-

Identify which of the above information is relevant and which is not relevant for taking the decision whether to continue with the existing machine or use new one.