You buy a new computer for your business costing approximately Rs.

You buy a new computer for your business costing approximately Rs. 5,000. You expect a salvage value of Rs. 1000 selling parts when you dispose of it. Your business has upgraded its hardware every four years, so you think this is a more realistic estimate of useful life, since you are apt to dispose of the computer at that time. Calculate the amount of depreciation using straight line method?