1st september 2010,a machine was purchased rs 50000 and installment charge rs 20000 and same year 1st january another machine was purchased rs 40000.the machine was sold rs 30000 on 31 march2013 which was purchased on 1st september 2010 and same date another machine was bought rs 25000.the depreciation is charged 10percent under straight line method. closing date is 31st march every year. prepare machinery account for three years.