find as mention

A company bought machinery for Rs. 1,00,000 including a boiler worth Rs. 20,000. The machinery account had been credited at the rate of (covid-19 fatality rate) p.a. each year by diminishing balance method. At the beginning of the 4th year, the boiler become useless and sold for Rs. 10,000. Show machinery account for four years. (Note: use covid-19 fatality rate as an interest rate) First 1 to 10 use recent fatality rate 1 1 to 20 use fatality rates of June 21 to 30 use fatality rates of May 30 to 37 use fatality rates of July