Ca cpt

 A machine purchased for Rs. 2,50,000 on 1.1.2010. It can produce 30,000 units during its useful life, its estimated scrap value is Rs. 10,000. The pattern of production over the next 4 years is as follows 2010 – 6250 units, 2011-2275 units, 2012-12,000 units, 2013- 3452 units, the WDV of the machine after 3rd year will be : ?

please solve this .:/