On October 01.2012 two machines costing Rs. 40,000 and Rs. 30,000 respectively, were purchased. On March 31,2016 both the machines had to be discarded because of damage and had to be replaced by two machines costing Rs. 50,000 and Rs. 40,000 respectively.
One of the discards machine was sold for Rs. 12,000 and against the other it was expected that Rs. 10,000 would be realized. The firm provides depreciation @ 15% on written down value
The total amount of depreciation written off on the two machines till they were discarded is _______.