Please provide detailed steps with explanation :

Metagrobolize Ltd. purchases an equipment at cost of $100,000 on January 1, 2017.

The useful age of this equipment is estimated to be 5 years. The residual value is

estimated to be $5,000.

Required:

(a)Metagrobolize Ltd. uses double-declining-balance depreciation method. Prepare the

depreciation schedule for this particular equipment. (8 marks)

(b)On the end of 2018, Metagrobolize Ltd. changes its depreciation method on this

particular equipment to straight-line method with a 6-year service life and no residual

value. Calculate the new depreciation expense per year. Re-prepare the depreciation

schedule for this particular equipment from 2019. (8 marks)

(c)On December 31, 2020. Metagrobolize Ltd. sales this equipment for $21,000.

Prepare the appropriate journal entry. (4 marks)